I didnt know you were allowed to include references and links in your listings...who does that?

Quite a few sellers, Facebook is a really good promotional tool. The reasoning behind not even allowed to have a reference in listings makes just as much sense as the reason for the fee increase, though.

All the Facbook button does is post a link on the Facebook profile of the user - that can be done in two seconds with or without a button and doesn't let anyone on eBay know that they can keep up with product updates or other things on FB.

eBay are obviously fine with Facebookers being brought here but worried about buyers leaving this site and going to Facebook, which is quite strange considering they're fine for listings to have links to actual commercial websites that are in direct competition for the item that's being listed - growing a social network of of consumers interested in an eBay seller's products is obviously much worse for business than sending consumers (that are already here) away....