Have you ever looked into ProBoards?
A guy name Steve McNeil setup a forum as a backup resource for his work at the QB64.net "official" site for QB64 (several other sites based on QB64 also exist) and invited everyone at QB64.net to post their work there.
It is only 2 days old but people are going there to post or backup work, it looks nice, screen shots and attachments allowed!
I guess the first month is free of ads but it's advertised as free.
BTW, Walter's forum is down for time being. I am still posting SB stuff at Retrogamecoding.org but one has to be a member to see screen shots and attachments.