As someone else has already mentioned, in the future I think social media would evolve so that business people as well as people who work with social media will be able to have all of their things in one. By this I mean for example, how Facebook and Skype have already merged together while people are on Skype they can still connect to their Facebook. Instead of just this, I think in the future they will be able to put together a way so that multiple things such as Twitter, Skype, and Blogger etc are all in one. This could make jobs a lot easier for the people who work with social media as well as business people because instead of having a bunch of different places for these things would be easier to access in just one place.
Another trend that I would add to the mix would be all of the cell phone companies coming out with phones that are tablets too, like Samsung has recently done. This is similar to when I mentioned that I think social media in the future will merge together because they are already combining phones and tablets. I also think that this specific technology will end up gaining popularity from all the other companies that will try to do the same thing.
Through-out the future I believe that social media will continue to grow to make things easier and faster for people.