Unfortunately, this doesn't make it any more pleasant when people who I regard as real friends in real life decide to tell me that I'm a worthless friend because I don't follow up to their last post on LiveJournal. I didn't realise that when they voluntarily joined LiveJournal I had entered into a contract to a) read every new update to their journal as soon as it was posted, b) follow up to every post, c) guess that a fairly generic-looking paddy about the technical crapness of LiveJournal and NTL is actually a hugely emotional trauma about the failure of a community to nurture and support them, or d) chase them up on email and implore them to return to LiveJournal.
If people don't want to use LiveJournal, then fine. I don't see it as an alternative to friendship, merely another way of keeping in touch with people. Some of my friends don't have mobile phones, so I don't text them. Some of them don't use email, so I phone them and meet them face-to-face occasionally instead. If a friend decides, for example, that having a mobile phone is a bad investment of their time/money, then I'm not going to run after them screaming "NO! NO! Don't give up the mobile phone! How will I ever keep in touch with you?", I'll just contact them another way.
That is, if they still want to keep in touch.