When you set yourself the challenge to post work daily, you begin to see a body of work growing, and it happens quite fast. (The work gets automatically archived at the same time - bonus!) It's part of the beauty of blogging.
Without this kind of commitment, I tend to make drawings, put them away in a drawer and forget about them. It's useful to have the opportunity to review work on a continuous basis on a blog. It's a bit like having one huge, luxury studio where you can see all your work laid out in front of you, pick out the interesting stuff to move forward and discard the not-so-good.