I've seen 3 different "Review my startup" posts on hacker news in the past week that was a startup whose sole focus is curating content for startups. I hate to sound like an ass, but it feels a bit like navel gazing or preaching to the choir. It would be one thing if those startups are doing something truly extraordinary, but so far I can't even say that.
I realize that hacker news is the ideal place for marketing to other startups, so kudos to you for knowing your market. But it feels a bit like when I played in a band and most of the audience watching were in other bands. If you are going play to a bunch of other musicians you better be amazing and blow people away or have something that will make jaded people remember you, i.e. amazing musicianship, great energy, brilliant songs or talent, even something unique like using different instruments like accordion or tuba. Otherwise you are wasting your time.
Similarly the expectations for building a startup for startups is very high, and these little projects for curating content for other startups when there are already some brilliant sites for startups does not bode well for your idea. Sorry to sound like ass, believe it or not I'm trying to help.
You bring up an great point about excellence and applicability. I agree. Just remember that each of us is in a different place and many of us are not as far along as others. Better to get feedback here first before approaching others in the real world.
The rest of you, keep those "Review my startup" posts coming. We won't be bashful. Promise.