I have a free Imgur.com account that seems to work well. I use it for
my VAF build log. I didn't at first, but more recently, I am. For a long time, I used Tinypic.
Other decent and free services are postimage.org and halie.com. The last one is owned by a member of VAF. I use one of them to also host my photos. Lately, each post in the blog has pictures you can see on Imgur and links to the same photos at one of the alternate sites.
So there are other alternatives. And you know what? They don't have the pop-up ads that Tinypic used to subject me to. Leaving was an improvement.
Dave