Doesn't really prove anything except they are willing to pay to advertise their service. Doesn't affect whether they are legit or not. The bitcoin foundation itself has been questioned whether they are legit or not.
Very true. Don't forget mtgox was a gold member of the bitcoin foundation lol.
i think donate to bitcoin foundation is easiest way to get exposed
and some of them is scammer
i saw updown.bt is gold member, but their service are horrible