Been lurking for a period of time here. While ideas are being thrown out there, here's a thought.

Allow comments from within feed readers as well as comment tracking (so you don't have to try to remember... or use co.comments, etc).

Could be done one of two ways.

1. Design the 'comment module' for the large blogging platforms (blogger, wordpress, typepad, etc). Bloggers confirm their blog on the platform (to bypass captcha or similar) so a users comment goes directly into the blogs comment system.

2. Create a widget that an author can place on their site that pulls the comments from the server housing the comments. This widget would be placed directly below where "normal" comments go and would tie in as seamlessly as possible.

Could be a standalone service or it could be the next feed reader that takes a chunk out of GoogleReader (unless integration with gReader could be figured out).

Thoughts?