There was another issue about fracturing but I haven't digged deep enough yet to know what that entails. I did see someone, I think it was from bitcoin core, say something off hand that DAGs were susceptible to that but I haven't been able to find that info again yet. Can someone give me a somewhat detailed breakdown of what that entails (or point me in the right direction to learn about it) and how IOTA gets around it?
Lastly, has the coin's cryptography and implementation been peer reviewed yet by any of the experts from the crypto currency realm?
To your first point: 'fracturing' I presume is Partition Tolerance? From a
CAP Theorem point of view IOTA is indeed Partition Tolerant with Eventual Consistency. This is actually a good thing, it allows IOTA to seamlessly operate in the Internet of Things, which ironically will be more about meshnets than 'Internet'.
Re: Cryptography, has been and is still being reviewed, thus far no one has found any errors with it.