I subscribe to multiple blogs (163 to be precise) and Google Reader
makes tracking all of those sites trivial. Readers keyboard shortcuts
mean scanning for new content and reading blog articles is also easy
and quick.
Occasionally, I also leave comments on a much smaller subset of those
blogs in addition to blogs I may encounter but may not necessarily
subscribe to.
After posting your comment, it is imperative to be able to follow any
subsequent discussions in case someone violently (dis)agrees with you
or simply to hear other people's viewpoint on the same subject.
So how do you track all those insightful, witty comments you have
contributed during your travels on the blogosphere ? How do you
monitor all those interesting conversations, heated discussions and
outright flame wars that you haven't necessarily contributed to but
are still interested in ?
The primeval solution is to bookmark and subsequently revisit every
single blog article you have commented on and, err, scan for any new
comments. However, this isn't a very efficient solution and you may
find you have no time left for reading the blogs (or holding down the
day job) let alone leaving comments.
Another possibility is to subscribe to the comments feed for all the
blogs you comment on. However, this may be overkill as you may only be
interested in certain articles of interest or articles where you
posted a comment.
For example, some articles on popular, high volume blogs (Scoble,
ProBlogger) may receive over a hundred comments but I am only
interested in tracking comments on a relatively small number of posts.
Some blogs offer 'Subscribe to comments via email' but this is not
universally available.
A deluxe version would enable me to track follow-ups to my specific
comments on blog platforms that support threaded comments.
My main requirements for comment tracking are:
- Easy, quick way to track comments on a blog. Fully automatic if
possible and certainly not more than one click.
- Ability to select comment threads to be monitored.
- Ability to stop tracking conversations.
- Must be able to track all blog platforms.
- Automatic notification when comments updated.
- Ability to check for updates manually.
- Visual indicator for threads with updated content.
- Must support RSS feeds to track comment threads.
- RSS feed must include the context (blog, date, comment text and
author)
The main three comment tracking services are:
[SezWho, Disqus and
IntenseDebate offer similar services
but require installation of plug-ins on the server to be truly universal
so are excluded but you may find these tools are of interest.]
Installation¶
All three sites require (free) registration and use a Firefox
bookmarklet to track comment threads. No additional plug-ins are
required on the server.
Usage¶
Each site has a home page displaying tracked conversations.

commentful provides a dashboard displaying all conversations of
interest. Threads with unread comments are highlighted in bold. Only the
number of comments is shown and to read the actual comment, you need to
click through to the original site. This is less than ideal as for sites
with lots of comments, you have to waste time scanning for the recent
updates.

co.mments has a excellent, simple, uncluttered summary page displaying
the tracked threads with new content clearly displayed. You can read the
additional comments simply by expanding the thread. The context
including the blog name, the date and time and the author of the new
comments are displayed.
One (minor) problem is that threads are listed in reverse chronological
order so recent threads with no updates appear above older threads with
active conversations.

The coComment 'My Conversations' page is a little more complicated.
Comments may be viewed by expanding the appropriate comment thread and
the author is shown although the date and time are not included.
coComment seemed a little slower to pick up new content than both
commentful and co.mments.
Both commentful and co.mments allowed a 'Check' button to force a poll
for new comments which is a feature coComment doesn't support.
coComment added a lot of social and community features in version 2.0.
It is fair to say that these Web 2.0 features were not universally
welcomed by the existing user base.
coComment allows you to examine comment threads tracked by
'neighbours' (people who presumably are tracking similar
conversations' and you can subscribe to other users' tracked
threads. Personally, I don't have a need for this feature but I can
see how it would be useful for discovering new, relevant blogs of
interest. However, your Web 2.0 mileage may vary.
Intriguingly, I have one stalker - sorry follower - on coComment but am
I able to click to discover his/her profile ? No. Maybe this is the dawn
of anti-social networking.
coComment also has a sidebar view to displays conversations with the
original blog displayed alongside but the interface is a little busy for
my liking.

All three comment tracking services use a Firefox/IE bookmarklet to
add a blog post to be tracked. commentful and co.comments display the
confirmation message and helpfully disappear. Unfortunately, the
coComment window persists and has to be explicitly closed Breaching
the one click rule).



Notification¶
coComment provides a Firefox plugin that provides automatic
notification in the browser. However, the current version (0.2.3.6)
proved unreliable for me using Firefox 2.0.0.8 on Windows XP. In fact,
I actually had to explicitly disable the coComment extension in order
to add conversations using the bookmarklet. In addition, the plugin
broke some Google Analytics functionality.
commentful also installs a Firefox notifier (1.7.3) that turns Amber
when new comments are available. Clicking on the notifier icon opens a
window containing the Watchlist. The notifier only updates every 15
mins so once you have read all new comments, confusingly the notifier
doesn't immediately revert to Green (no new comments).
Thankfully, co.comments doesn't include a fancy comments notifier.
Probably just as well.
Of course, checking a Web page to check on the status of blogs you
have commented on is pretty tiresome. Even with the help of a notifier
application. What intelligent, lazy people really want is an RSS feed
that tells them when important changes have occurred.
All three services offer RSS feeds for the monitored conversations.

Like the Watchlist, the RSS feed from commentful just contains the blog
title together with number of new comments. You have to visit the site
to view the newly added comments. This rather defeats the purpose of the
RSS feed because ideally, you want to be able to view as much content as
possible from within Google Reader. The only time you might visit the
site would be to participate in the conversation (i.e. someone said you
were an idiot).

The co.mments RSS feed contains everything needed for context (author,
blog, comment, date).

coComment offers the usual separate RSS feed containing updates on all
tracked conversations although the author appears to be 'unknown' most
of the time. I presume this is 'unknown' to the coComment system
because the author details are supplied on the actual comment.
CoComment does have a additional feature which is useful. coComment
provides a second RSS feed purely contains the individual comments you
have posted. This is very useful if you are intending to add all your
words of wisdom to a lifestream style page (Tumblr, FriendFeed).

Conclusions¶
commentful is basic but does the job and will save you time if you
merely want to be automatically notified when new comments have been
added to a blog post. However, you do have to visit the site to
identify and read the new content.
coComment is the most feature rich and potentially powerful tool but
the complexity of the interfaces and wealth of social networking
features are slightly overwhelming for my simple requirements. However
I will use the RSS Comment Author feed to track my own comments. Once
I've worked out why it has stopped working.
co.mments - simple and functional. The RSS feed contains precisely the
information I need and is updated quickly. This is the tool I am now
using (via RSS) to monitor all comment threads of interest.