Since I'm on an anti-McDonald's kick... here are a few sites you should visit:
• Factsheet: What's Wrong With McDonald's?
• McKids: Don't Be Tricked By the Clown
• McLibel Trial
Personally I avoid mostly all fast food chains. I'd prefer to foolishly hand over my cash to nameless, faceless, greedy, environment destroying, worker exploiting, children addicting, politician buying, corporate mongers like McDs, Starbucks, etc...