We've all seen it. The classic tutorial on [insert popular web framework here] that has us building a blogging system in twenty minutes or less. It's actually getting kind of old and I'm growing sick of seeing what I'm able to create with only platform x,y and z. I'm more interested in how I can use a web framework that doesn't hold my hand by providing a bunch of "one size fits all" defaults. I like flexibility and choice. I like it when the web framework I'm using allows me to mix and match third party systems easily. One third party web framework component that is becoming more popular is commenting systems. Let's take a brief look at three of the most popular systems to see what each offers us.
How about the user experience when commenting on a site? This is where I really appreciate the power of third party commenting systems, with the value added by extra features I didn't have to code. Things like email notifications when someone replies to a thread, sign in using any of the social networks I'm a part of (ID supports Facebook, Twitter, and Open ID at the time of writing), automated threading, profile linking, upvote/downvote, comment history, and integration with popular blogging platforms like wordpress, blogger (hint hint Posterous, it would be nice if you added this!).
I was also pleasantly surprised that a tweet about a bug in the email notification system yielded a really fast response from their technical support team. Did I mention it's free?
I haven't used JS-Kit (JSK) on any live blogs but my good buddy Nathan Heagy let me know of it's existence a few months ago and I was intrigued to see what it might offer. Some differences from other systems is that JSK allows you to publish comments from a larger variety of places and broadcast those comments out to more than just the web page the comment thread is embedded on (ie: google friend, yahoo friends and FriendFeed in addition to the regular social networks). JS-Kit also has image uploading, YouTube video embedding, a basic comment formatting interface and lots more. These features are nice, but I don't think they add as much value and here's the kicker: JS-Kit isn't free. They have a 30 day free trial available but after that pricing starts at \$12/year but is based on the amount of traffic your site gets.
The code seems easy enough to understand:
JS-Kit is ok but Intense Debate being free and providing essentially the same core features without all the "bells and whistles" appeals to me much more. YMMV ;)
The veteran in hosted commenting systems, Disqus has been around for a lot longer than either Intense Debate or JS-Kit and it shows. Disqus offers the most in terms of supported platforms for connecting to and rebroadcasting to as well as the media features that JSK offers (video and image publishing). Setup is slightly more involved; if you want to add things like Facebook Connect and Akismet (for spam protection) you need to provide API keys. Again the code is very easy to inject into any page, static or dynamic.
Disqus also gives you the power to control the look and feel of the commenting interface right inside their control panel. This is a pretty nice feature for people who aren't so technical that they want to hack away at the CSS manually. The fact that right out of the gate Disqus is free and offers just as much power as JS-Kit and Intense Debate makes it a pretty attractive option.
These are just a few of the options out there if you want to implement a commenting system and don't want to write it yourself. I hope you learned something reading this (I sure did writing it). I made sure to research all the facts as best I could before writing but in case I missed anything please feel free to let me know in the .... commenting system Posterous has built in :]