When I first joined I played along with the "don't say ebay" thing all the time, out of politeness. I've finally concluded it's nonsense, I'm afraid. And looks silly to outsiders looking in. All that saying ebay does is make the forums here more visible on Google to people looking for an ebay alternative - how can that be a bad thing? If you search the forums for "ebay" you'll get several pages of threads, and some even have it in the title. There's no suggestion that it's a "bogey word" that gets threads deleted, as far as I can see.