i may be a bird in a cage but at least it's your cage

Why don't I use it? I'll simplify from earlier posters' answers: information overload. Not only is the time-consuming task of transferring things to the delicious site exhausting to contemplate (I never even finishing going back through my four years of blogging and memorying it all), but I honestly have begun to avoid getting too much information.

I don't want to go over there and be bombarded with new must-read links every day. I don't want to feel like I need to be keeping really good track of everything interesting I see and do so that I can add it into a social network. I don't even use LJ tags (partly because I'm not on S2), and while I do put many new posts in memories, I only do that if there's a specific category it fits into. And I don't categorize, memorize, or otherwise memorialize other people's content at all. I don't even have a fic booksmarks section on my PC, how's that for low-info? *g*

I have 99 people on my friendlist, and metafandom already teeters on the edge of giving me too much new information. I am aware of the marvellous brilliance of delicious, because there is such a bewildering forest of information on the internet that it cries out for a way for people to organize and share it. So go them! But I have been online too long, it feels, to keep up with the pace of new-information-gathering, and it's also just not my personality, I think.

OK, that was a really long answer, but it can still be summed up as "information overload." *g*