Take it from somebody who lost at least one whole blog entirely from the consequences not upgrading WordPress: Upgrading your installation or patch is essential. So read this from Ian Kallen.
Also what he added by IM yesterday:
|What’s happening is: spammers are taking over blogs, posting link farm links on them, obscuring their human visibility with CSS tricks but the links are still visible to crawlers…|
|All wordpress users that haven’t patched or upgraded to v2.3.3 are vulnerable.|
|WordPress does not auto-update security fixes.|
|…Any help you can provide getting the word out would be a mitzvah|
I added the last link.
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