>What happens when someone represents him/herself as Int. or advanced, but others disagree with the self-rating. Who is to say, "Hey, you're no advanced player, you're an expert and you shouldn't be in the int+/adv club as a member?"
I think it would be to the benefit of Intermediate and advanced players to have Experts play. Think about it:
1) one improves by playing with and against stronger players
2) the expert opponent will punish your mistakes. If you are willing to take the time to look over the replay later on you may learn from it.
3) the Expert will play the hand well, and may deceive the defenders. Again, study the card play, and how the Expert may have drawn inferences and chosen a different line than what would be normal.
I would love to play with and against experts. (Fred if you need a partner, just give me a call

) It would be great for me (perhaps a bit frustrating at times too!) and I'd learn. It would probably be frustrating for them after a while.
The true expert will get bored playing with weaker players, unless they are mentoring a specific partner.
My concern is the "intermediates" who are not. The ones who:
- make cute leads such as 2 from 3 2 or 2 from 10 9 8 4 3 2
- Holding 3 trump and 15 HCP jump to Blackwood
- cash all their aces on the first 2 card plays then say "WDO" when the opponents make game, scoring declarers 2 kings
- don't lead your suit after you have overcalled when vulnerable
- switch suits all the time, giving declarer all sorts of free finesses
- ruff your winner on defense because they haven't paid attention
- dont want to be bothered with signaling, not even attitude, and play random cards.