Fresh content on the front page is a good thing. We should be FP'ing more than we do. Though I'm not as motivated as I should be, these are the criteria that I try to use:

• Is there any reason it shouldn't be FP'ed?
  • Too long? (In some cases <readmore>...</readmore> tags placed by a Janitor can fix this problem.)
  • Too dumb? (You can't fix stupid.)
  • Unanswerable? (Too little information provided to get a good answer.)
  • Too off-topic?
  • Too poorly formatted? (Janitors can help here, but sometimes it's just too much work.)
  • Too little effort / research from the OP? (All too common, and not to be encouraged.)
• Can the question be upvoted by someone who is using voting conscientiously?
• In rare cases: Has an answer been provided that is so good, it turns a poor question into a good thread?

If there's no reason it shouldn't be front-paged, and it's worthy of an upvote, it should be Front Paged.

The reason that a fresh front-page is good for the site is because this is where the majority of people land when they arrive here. Landing on a page that hasn't been updated in hours makes it look like the site is stagnant. We would prefer that, in lieu of snazzy design, the content of the site appears engaging and fresh.

I don't worry about too much traffic on the front page, as long as it doesn't exhibit characteristics of posts that aren't front-pageable.