Ever since Tinypic became less than reliable, I've used Imgur, and it works just fine.
Tinypic apparently has an issue where people can actually hijack your link and point it someplace else. If they hijack it to a picture that violates the TOS, you get nailed with the modification. Imgur apparently doesn't have the same problem.
"How do I get rid of a Trojan Horse?" -Sailor_Kakashi "Leave it outside the gates of Troy overnight." -Davel23