http://tag.loudly.com
For a demo, here's a blog entry where she's using it:
http://www.phosphenefashion.com/2011/02/today.html
Want to try out the actual site? Just use the invite code HACKER or follow this link:
http://tag.loudly.com/welcome?invite_code=HACKER
Anyway, I know the HN community is always ridiculously insightful when asked for its advice, so here I am.
* What do you like and dislike about the service? * How might you extend upon it? * How would you promote it?