Look at the specs for BlackCoin, it is NOTHING like Bitcoin or iXcoin.
It's not even POW or SHA256d.
BlackCoin couldn't be more different than Bitcoin.
99.99% of the alts are Bitcoin brothers cause they're Bitcoin clones but iXcoin is the only Twin. And that's going to be a massive advantage when mass adoption comes due, cause people will not easily understand a different coin (ie. iPods, AOL, etc.) but even the most computer illiterate people will understand the term: Bitcoin's Twin.
47.6% of Americans(USA) believe that there are midgets inside of ATM cash machine that handle the money. So they are not going to understand any coin, but thats ok because they will do what they are told to do by the TV.