I do something similar to bugman! I try to get a post written out in a separate place like Word or Docs. I try to force the whole post out even if it is bad. Then, I let it ruminate for a a few hours or a day before returning to it and editing it down to something I am more happy to post. 

The big thing that I think gets people to post regularly is just getting into a good headspace for it. The right music, a snack and a drink, making sure you're mentally ready and not exhausted. No distractions, just you and the writing. It doesn't always work, but hey! The whims of writer's block is truly an enigma sometimes!