MiracleOfSound said:
What's GFWL and what does it do to hinder the experience?
It is an online service, much like Steam, that provides mutliplayer, achievements, friends, ect. It does just about everything Steam does, with Steam doing something things it doesn't and vice versa.
It does nothing to hinder gameplay, as long as you live in a supported country. Even then, Microsoft provides a loophole to allow you to play online anyway. People will use this as a con all the time, but they don't understand. In some countries it is illegal to buy consoles. Microsoft cannot support those countries, because the LIVE network is unified. Everything is connected.
Go to http://www.microsoft.com/games/en-US/index.aspx and download the client. In the client, you can get a free copy of Tinker. Test that out to see for yourself if it works for you. Most have never used it, but continue to hate on it regardless.