I just don't like the Google's Like button, a.k.a. the tiny +1 rectangle. It's just not obvious. It looks almost like a logo and I'm afraid Google is making the same mistake as Microsoft Office 2007 (the big office globe button on the upper left that many thought it's just for decoration). My fear came true when a friend of mine yesterday told me she wish she could 'like' my posted photos. I hope Google can change that button, right now it's just not as obvious and psychologically commanding as the Like button of Facebook.