Forgive me if this is already obvious, but I dont remember seeing this mentioned in any threads.

I got a 600 as an upgrade from a 300 last month, and while wandering around the sprint site looking around for freebies, I must have accidentally ordered some software, because I was billed for it (but never downloaded it). Sprint will refund it, but more to the point, the $14.95 charge was offset by the monthly $10 vision premium package credit.

There's not a great selection of software, but there are several I bought normally that would have been practically free (ie Butler 11.95=10 = $1.95) and several I was considering, and will remember to use this to my advantage - gives me an excuse to buy sw every month.