It really depends on your capabilities. It's not for technically illiterate people at this point, I give you that, but let's remember that it's far from a "finished" product. The protocol itself works brilliantly though (hence the happy user base).
Again, of course it's miniscule, because it's an "infant" project. You cannot expect that a new form of money takes over the world in a few years, especially considering that there is no violent force supporting / forcing the use of it.
Any form of money or value attracts scammers. By the way, we already have the "first" bitcoin scammer's case with the US authorities as an example:
http://www.businessinsider.com/sec-c...-scheme-2013-7