Ohhhhh, I got excited with having a shout out =D
Well if it's just for socialising and keeping in touch with emails and stuff, then a tablet should do you fine.. but you have to be careful which one to buy.. too cheap and it will be a pile of rubbish where you'll find your bath over flowing before it loads google. If you buy something like an iPad, then you have to worry about the large list of faults they have (every person I've known to own one, has complained about them dying, forcing them to buy the more up to date tablet).
To be honest, it's all speculation, take a look around on google, there are some pretty good tech comparison sites with gadgets and gizmo's such as this, and they're not biased, they'll tell you which is the best value for money and why!
But my personal preference is this... I don't have one, I have a notebook, a laptop, a computer, but MAINLY I use my windows phone.. although the screen isn't as a large as a tablet, the battery performance is amazing, I can do everything that a computer can do (regarding socialising side of things) and most of all, it's my phone as well, it's always in my pocket should I need it to talk to someone, phone someone, or even sneakily play a game of tetris on the bus lol.
And saying that, I have the second cheapest one money can buy (to my knowledge) it cost me 175 pounds, and it has NEVER failed me and thats after owning it for 6 months with constant use. there are cheaper ones on the market, theres a Nokia windows phone thats only 100 (my brother-in-law has this, and he loves it).
But like I said, it's personal preference, will you be taking it everywhere with you? will you be using it all the time? is there other things you want out of it other than socialising??