theInput.net new feature: comment subscriptions!

I've added a new feature to theInput.net: the ability to subscribe to comment threads. This will allow any commenter on an entry to receive an e-mail anytime someone else comments on that entry, making it easier to keep up with conversations on the site.

In order to subscribe to the comments on an entry, just make sure the box labeled "Receive email notification of further comments" is checked when you submit a comment, and that you have provided an e-mail so that you can be reached. To unsubscribe, merely uncheck the box next time you make a comment on that entry.