There are lots of theme oriented photoblog LJ communities, like urban_decay, rural_ruin, deadmachinery, found_objects, kittypix, and naked_obsession.
There are also communities for more serious (or at least most skilled) photographers to post finer works.
But there is a certain discipline in having to do something on a fixed recurring schedule.
I'm also inspired by something my sister jatg said once. "It's easy to learn to draw. You pick up a pencil and piece of paper and draw a picture. Do that at least once a day, every day, every day, and in twenty years or so you will be able to draw."