Well, it's simple. There's a difference between mentioning or reviewing a product possibly with a price tag and posting a reminder about some discount.
Just to clarify, I just think the tools section shouldn't be packed with commercials. :P
This is imho more interesting than the 90 percent spam messages spread all over this forum.
But if you rather tolerate pure spam but shut off interesting news
That's a slightly different, but similar problem. No offense to anyone, but we could do without them.