Wait, you can get apps for the Droid outside of the Market that's on the phone?
How would you get them onto your phone? Or are there other apps to purchase these?
Yes, you can download an applications .apk installer (zip file archive) from any legitimate source. You would then transfer the file to your SD card and launch the .apk from there. The Market is the primary vehicle for selling and delivery of applications but not the only one.
I'm only 2 days in with my new Droid, so sorry if this is a goofy question. If you get an app from another source, such as mobihand or other (legit site that is), does it tell you when updates are available, like the market does? What are advantages of other places? (coupons being one, just wondering the others).