I noticed that when I tried ordering food off www.seamless.com, I could put together an order, but the checkout process would fail in the final step. It turns

I noticed that when I tried ordering food off www.seamless.com, I could put together an order, but the checkout process would fail in the final step. It turns out, it was because I had blocked *.facebook.com. I do not like that major websites will break, if Facebook is blocked. My business with Seamless had nothing to do with Facebook. Facebook does not need to know that I am ordering food. Especially if I am not even logged in. Why can't I simply say "no" to all interaction with Facebook? Also, try firewalling Google Analytics, and see how much of the web breaks.