Resources where you can get backgrounds for
your profile as well as icons to put in your blog

Twitter Backs Free Twitter Backgrounds. Includes @problogger's background.
Twitter Patterns 50 design patterns you can easily use for your twitter background
Tweet Backs Some twitter backgrounds you could use
Siah Design free Twitter buttons you could use as well as animated ones.
Buttons Follow me on twitter buttons
Twignature Create your own twitter
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