Here's what needs to be paid for:
Marching Contest Ads (Unless you have already paid by banner advertising. Banner advertisers can always post for free).
Items for Sale.
Job postings. Especially when I'm being asked to lock or to correct spelling, etc.
"I need a job" postings. See just above.
Conferences and Workshops.
Websites and Forums.
I'm not the best at collecting advertising fees. I mostly depend upon posters to be thoughtful. I've "caught it" in the past for charging advertising fees, however, I remind people that if you were to want to post your want ad in a magazine or other media, they would also want to be paid. Please keep this in mind.
For more information about advertising on the board, call Steve at 210-473-2480 or email email@example.com