Social Network (I.e. Facebook)
I’m waiting for the day when Facebook succumbs to the mountains of spam currently plaguing it’s pages and another will stand in it’s place. It’s the reason MySpace failed for many and I can see it being the same reason for Facebook failing. It’s difficult to avoid and slowly becoming more and more annoying.
Unfortunately, I don’t think there’s going to be a replacement big enough anytime soon. Maybe Google should start a social network of their own? GMail turned out to be a massive success and was never marketed, was publicised purely by word of mouth. I’m sure they’re social network would equal this achievement.