social networking - What are the 'like', 'tweet' and 'share' buttons for?
Great question! These are known as 'social bookmarks'. If you have a Facebook account for example, you can click the 'like' button on any page and this information will be shared on your wall. If you have a Twitter account, click 'tweet' and a link to this page will appear in your timeline. You can also share a page on almost any other social bookmarking site, such as Digg, StumbleUpon and Delicious, or on Instant Messager - the choice is yours!