Yes, it depends a little on the niche. Three+ weeks sometimes. She's kept one of my blogs in the top 10 of it's cat for 6+ months now. So I never bitch! You'll get an email on accept and then be in the 'publish' queue. I love her traffic though It's usually worth the wait.

If you scroll to the bottom of this page you'll see the current queue, you might gain some insight. You'll be able to see how much current competition exists for your niche.
http://www.penisbot.com/top_listing_secrets.html

Good Luck Michael, hope ya' make a million!