We've all seen the social bookmarks that appear at the bottom of web pages. Their function, in the age of social media, is to invite people to take the conversation that they see on a web page and take it someplace else: Facebook, Digg, LinkedIn, StumbleUpon, and many more.
Generally speaking they look like this:
Or even like this:
Whilst following a news article on Twitter about Twitter Usernames and vs Email Addresses, I came across these social bookmarks. Because of their design, you are drawn to mouse over them and, yes, they do pop up. They look different from other social bookmarks and, I believe, make people want to click on them and take the conversation someplace else.