content: I've invested in 7. Only one of them failed to meet its goals, and that was at the hands of the guy running the show (not the others assisting him). His name is forever tarnished with it (look up Code Hero). I've backed games, electronic gadgets, a young gal's electronic ink pen and little electronic switches/lights to go with it, etc. (so a wide variety of projects). 1 out of 7 isn't bad. Judging by the other posts, there are some that just have a higher than normal failure rate, though I find that it ends up being poor business planning than failed tech.