the ability to mine jackpotcoin
I would have to imagine that right now Christian is about public enemy #1 for new coin devs. If there is a flaw in your coin he seems pretty adept at finding it.
There aren't a lot of guys running around that have his level of skill doing this, because it isn't like I (or most of the others just mining) would every find flaws like this.
These are new algorithms though, so I think this is all part of the growing process that others have already gone though.
It does make it all stronger in the long run, because at least Christian lets everyone know there is a flaw.
Imagine the outrage that would happen if this went unnoticed for months and the coin was at a more successful point when this came out. People would freak out.