There is no law of conservation for creativity. It's not a use it or lose it kind of deal; don't use it and it's still waiting. So you know, do something with it.

I argue with this premise, because I and some others have found sort of the opposite. It may not be an upper limit on creativity so much as the finite nature of time, energy and focus -- but there's quite simply only so much you can do, and only so many projects you can really progress on at the same time. (The flip side of course is that creativity dammed up in one area does overflow in other directions -- I've found myself suddenly dipping back into ficcing when I got stuck on all the knitting I was currently doing, for example. Neil Gaiman and Jhonen Vasquez have both done plots along the lines of where creative energy can find itself diverted to.)

That being said, I'm in full agreement with letting creativity flow somewhere rather than going entirely to waste, and not second-guessing oneself as to the directions in which it's being expressed, and just kind of generally going with it to keep one's chops up and one's skills honed.

As for Facebook, I keep coming back to the problem that it's set up to allow you to be "friended" by family and people you work(ed) with and went to school with and knew IRL but lost contact with years ago: Which is to say, people you find yourself associated with that you might not have chosen to affiliate yourself with had you been given free choice, and with whom you may have nothing in common, no shared interests or topics of conversation. It's set up to encourage inanity, the small talk of people who don't know each other well enough to have anything serious or interesting to say to each other, or who don't want to say it because they know it won't set well with part of their audience. Whereas LJ/DW are based around shared interests and mutual friends (to say nothing of friends-locking and carefully constructed filters), which encourage the exact opposite.