[Bobboau]

http://www.usatoday.com/story/tech/2014/04/11/heartbleed-cisco-juniper/7589759/

[karajorma]

LastPass have a rather nice Heartbleed vulnerability checker which will not only check if the site is running OpenSSL but more importantly it will also check if the site's certificate has been updated this week. (but unfortunately it won't check which version of OpenSSL is in use).

You can find it here. If you actually use LastPass, you can run their security check to see which sites are vulnerable (It's never a bad idea to run the check anyway).