I use Flickr much more than Joedios for a few of reasons:

1. The 0-Ring crew is all there, and so you don't get people going "ur pic would be better with 25th figs"

2. It works 98% of the time, JD was down for a large portion of time twice in the recent months

3. It's more personalized, with JD you add something to the site and it's gonna be pushed back three pages within a day. It's easier to keep track of what your friends are posting as well. Plus at least with dudes I know it's posted on Flickr days if not weeks before JD.

4. You get to meet people who don't frequent joe sites or see people's other hobbies/interests.