I would not invest tons of money because right now it's still pretty risky and I'm not a gambler.


I would invest a few hundred $ if it would be easier to actually purchase coin. Anything more complicated than :

Step 1 - insert credit card number and bitcoin adress
Step 2 - get the coin

is too complicated. 

For me it's also a way to evaluate the chance of bitcoin catching on... as long as getting coin is hard, I don't think they have much chance of going mainstream and so it's not a wise investment.

The few bitcent I get from minning are my only "investment". I don't plan on cashing them out.