It looks like the uber-popular ShopSavvy application is missing for some users. The creators of ShopSavvy have received multiple reports of ShopSavvy not displaying in Android Market and are wondering how widespread the issue is. ShopSavvy displays just fine for us (open up Android Market, go to all applications, sort by popularity, it should be 4th).
If ShopSavvy is missing on your Android phone, head over to their site to see how to help!