Ping: ring; noise; metallic sound; action which is intended to reveal the arrival time of a message from one computer to another (Computers) Tag: label; something which hangs loosely; phrase or nickname which characterizes something; (Computers) label which instructs the computer to display the text following it in a certain way (in the programming language HTML) hehe no all kidding aside I think you should look at sites like for instance Wordpress or the like to find a good answer.
Here is an article i had written a while ago http://www.novasoft-inc.com/articles/boost-pagerank-using-social-bookmarking.asp