Twitter-icon.com has a great selection of twitter icons and buttons.
Site: dirbizz.com (Bidding DIrectory)
bidding directory displays links alphabetically, and lets you bid your way to the top of the list. Increase your bid to take a top position, and not only will your link list higher in the directory, but you could join Link Leaders on the homepage.
Do you have a twitter account? If so it's important
to get as many people as possible to follow you.
Great follow me icon captures attention of the visitors
and brings more followers to your twitter account.
Choose great twitter icon for you website!