Days spent making Canabalt: 5 (long ones)
Hits on my server: ~2 million
Hits on other major portals: ~2 million
Estimated hits on crappy portals: ~4 million+?
Hits on my server from twitter: 50k+
Best Referrer: Stumbleupon
Money from donations: ~$500
iPhone sales: can't say but good enough!
Top App Store Ranking: 37
Bandwidth Bills: $1000+
Top legit score I've ever seen: ~30km
My top score: ~8km
Resolution: 480px x 160px
Initial Piracy Rate: 12%
Current Piracy Rate: 25%
Inspirations: Half Life 2, District 9, Banlieue 13, Another World/Flashback/Prince of Persia, War of the Worlds (book, not movie)
So yea, I didn't mean for it to sound quite so dramatic, like the app store doesn't have any tail at all, because that's not really true. But for getting a read on your product's success and earning some useful revenue for the next project, those first 2 months in my experience are key.