Here's a funny one:

"Error: The name of the file is invalid." WTH?

Update: Another way to enter photos is to click on a photo album, then "edit", and then "add more photos".  You can just directly upload them from your PC to the album.  The only thing is I don't know if only the album's creator, admins, or anybody can update an album that way.

Okay, this is how it works.  There seems to be two ways to add photos.  The first way is to click on an established photo album, such as this one, and add new pictures by inserting them into the comments by using the little tree icon (in the comments toolbar) and copying the image URL from a picture hosting site, such as ImageShack.  That is how I posted the Black Crusader Dreadnought illustration above.  The second way is by creating an entirely new photo album.  When you do that, you get to name the album and put in a cover picture.  Then you can add photos as above.

Good question.  Umm....

How do I post? :,(