Just because sprint is going to charge $30 bucks for tethering doesn't mean everyone has to get so pissy about it.
Seriously think about it, how much would a air card and service plan charge you? and thats for only one device!!
So if you think about it, the Evo is a 2 in one, an air card with wi fi and a smartphone. So yeah Sprint is going to charge you a lil extra for their "air card service" otherwise how would they make money? They are already giving the phone away at $200 w/ contract and off at $ 450. plus its 4g with up to 8 devices connected through wifi!
If you don't like it, go buy an air card and another data plan and tell me how much your saving added with your cell phone bill.
Otherwise pay it and shut up or just wait till they get it rooted and hopefully everyone can get it for free