I don't see any difference in giving names to millionaires, they are rich and that's it. Someone made it with work, someone is from rich family. I like this ranking system that someone made:
RANK LEVEL 21: 1,000,000.00000000 BTC ≥ God of Bitcoin (Reserved for Satoshi, unless there is another person this rich)
RANK LEVEL 20: 500,000.00000000 BTC ≥ Bitcoin Elite
RANK LEVEL 19: 100,000.00000000 BTC ≥ Bitcoin Oligarch
RANK LEVEL 18: 10,000.00000000 BTC ≥ Legend of Bitcoin
RANK LEVEL 17: 5,000.00000000 BTC ≥ Champion of Bitcoin
RANK LEVEL 16: 1,000.00000000 BTC ≥ Master of Bitcoin
......
there is more, but now we are talking about rich people, not about poor! So master of bitcoin sounds perfect to me!
RANK LEVEL 6: 0.05000000 BTC ≥ Bitcointalk Signature Spammer
It sounds like everyone who got bitcoin that high in wallet is a bitcointalk signature spammer they can earn another way besides this cause I get this particular amount easily by altcoin trading. So all in all I like his ranking system not just the name of rank level 6.