It's not the advertisement by itself that concerns. Equipment manufacturers posts are one of the attractions in RCU. They often knows more then others about our hobby, and when they mention their product it is usually contributing to the discussion.

The problem is when manufacturers or dealers try to mislead us by purpose.

When I see 10 people saying good things about a new product, I may think that it is indeed a good product. While in reality, all the 10 user names were the same guy, and the reason that nobody wrote bad thing about the product is that nobody used it.

btw, the reason that you haven't heard about ultimate_3d is that it apears in begginers posts here in the 3D forum ("how to hover ?", etc.). And indeed this kind of misleading posts are ment for beginners.

Yaniv.