There's no description of this rule in the Classifieds Rules, Usage Agreement, and FAQ I think that would be helpful. Also, mentioning a maximum limit of 20 photographs per thread would be beneficial as well.
I asked the mods about this too. I get that they don't want new classifieds getting buried in the back pages so quickly. BUT, my posts are in different categories. (ie 2 in BG preamp/amp, 3 in BG parts accessories, 2 in DB amps/accessories.) They talk about posting multiple items together, but that doesn't work if youre selling various DB and BG gear. Does any one search the classified ads from the main page? I bet everyone goes to each specific category. Having only 5 posts daily total is a PITA, I would vote for 4/category or at least 8/total, if we got a vote