I'm afraid the question itself isn't very clear to me. Could you restate it more clearly perhaps?
Future
7:24 pm on Nov 9, 2009 (gmt 0)
Hello bill, You are right, question has small grammar mistakes which makes it wrong.
My question is: [twitter.com...] on going to above url, I am able to find urls which are also marked with www.webmasterworld.com/ but, majority of twitter urls are powered by bit (dot) ly ?
bill
6:24 am on Nov 10, 2009 (gmt 0)
Those URLs are generated by URL shortener [google.com] services. Twitter only allows 140 characters, so space is conserved by these services. Some Twitter software, like TweetDeck, have features that will expand these shortened URLs so that you can see the original target.
phranque
9:09 am on Nov 18, 2009 (gmt 0)
twitter will truncate or shorten any url that is longer than 30 characters. the shortener is preferable to truncation because a truncated url doesn't perform well when used with cut-and-paste methods.