Unless I’m missing something, the miscreant thread referred to at the start of this thread as the "Unmentionable Topic", which was titled “New S*i*e Browser, a new way to Sn*pe!” ("*" for protection), has been removed.
I just reviewed this forum’s “Terms of Service” (it’s at the bottom of the page for those interested) and found the following: Please note that advertisements, chain letters, pyramid schemes, and solicitations are inappropriate in this community.
Personally, I think Jabber's t-shirts should be exempt, but that's just me.
Also, here are some posts that I dug up regarding the prevailing wisdom on how to best deal with these:
https://community.auctionsniper.com/eve/forums/a/tpc/f/985608021/m/179601057
https://community.auctionsniper.com/eve/forums/a/tpc/f/38.../559109619#559109619