I just heard that people are beginning to see malware warnings when looking at blogs. I only use the standard Blogger widgets from Blogspot, so mine should be safe unless the virus has gotten into the blogspot.com servers.
One thing that happens is that a single infected blog can cause malware warnings on any OTHER blog which lists the infected one in its blogroll. So, to be safe, I've temporarily removed my larger blogroll. I'll keep the "men's blogs" list, because it's small and hard to rebuild.