Not for me - the technology that I make use of, mobile phone and internet, has enhanced my life beyond all recognition. I have regained contact with people that I lost touch with (I know lots of people use the argument that we lose touch with people because we don't really like them anyway, or whatever - but that's a lame argument, because quite often it's just not true; people lose touch for all kinds of reasons, and there's one friend I've been trying to get back in touch with for a few years whom I just can't find! If she would just get herself on facebook I'd find her in a couple of minutes!), and I am able to keep in touch with friends and family who live on the other side of the world. Sure, it's not as good as a hug and a cup of tea together, but it's better than nothing, which is what I had before. Letters are great, and I write letters too - but they take a long time to reach their destination, and are almost more impersonal than chatting online, because the conversation is always one-sided - you always have to wait a long time for the response, by which time, the moment has gone and the response is irrelevant! But I do still love letters.
Talking online with people, and texting friends, has made me much more sociable - I never used to meet friends for coffee before, used to keep myself to myself. But social networking with friends and family who live in my town has really brought me out of my shell. I meet up with friends every week, and I see family as often as I can. This is all down to facebook! I think facebook is a wonderful thing, if used properly - and I believe that I use it properly :)
So, no, for me technology is not killing my ability to close relationships - quite the reverse. And texting and emailing have not affected my spelling at all! *quickly checks through answer for spelling mistakes!*