I've noticed that highly-voted down questions, which I'm sure are correspondingly flagged as spam, are still left around. The problem seems to be getting worse, in part (I think) because it's not being corrected.
Those four are all within the past month. As OnStartups continues to grow, it'd be great to avoid the newest questions page get cluttered with things the community has clearly indicated they don't think are appropriate.
P.S. Thanks for all the things you have done to make OnStartups an awesome community.