Fried Eggs

Depends. Do you want to build it yourself or do you want an OEM?

HDTVs are getting cheaper all the time so in a year or two you might find yourself getting one. In that case, yes it is worth it.

If you go on the Steam forums you'll find hundreds of people like you claiming the same thing. Most of them are lying and nobody believes them. I feel bad for you since you seem legitimate. I'm afraid there's nothing you can do to get unbanned.