I think a fair marketcap of Globalcoin where it stands today is in the mid twenties of the coins out thee, but you never know. if Quark can go to $62,000,000 in a week, Globalcoins certianly can as well.
GL all.
So, what do we have for the Top 10:
1. Bitcoin
for sure, it is the first, the brand
2. Litecoin
It is silver. The first scrypt
3. Peercoin
-> sure, first proof of stake
4. Namecoin
-> sure, it has the domain-thing
5. Primecoin
-> yes, new form of PoW. Looking for Primes, that can have scientific use
6. Worldcoin
-> yes, it is fast. 30sek
7. Quarkcoin (or Securecoin)
-> 6 different hashes makes it secure (+ fast)
What is 8,9 and 10?
Datacoin is something innovative. Globalcoin as well. Or Protoshares, Anoncoin, Nxt?
But we have Zetacoin in the top 10, Feathercoin, Megacoin. I don't know, why they are so popular...