I think it's related more to the amount of time spent, and the accessibility. It's a lot easier to post to facebook from a cell than it is to post on LJ from a cell.
I agree with you plus why type out a blog if people have read what you are up to on fb unless its something I don't want everyone to know or there are more details than I put it on here
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Date: 2011-03-03 05:43 pm (UTC)LJ is a blog site, Facebook is a social networking site. Sure there's some degree of networking on LJ too, but beyond that I see little similarity.
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Date: 2011-03-03 06:01 pm (UTC)no subject
Date: 2011-03-03 06:03 pm (UTC)no subject
Date: 2011-03-03 06:52 pm (UTC)