Just noticed this on the official David Allen Company forums. David has asked that anyone who writes about GTD include a link to this definition on their site. It's a little salesy, but I'll bite. Here it is. Enjoy.
Your humble Lifemuncher, Jennifer George, spends her spare time compulsively improving, replacing, rethinking, and refining her organizational system. She earnestly believes that once she's found the perfect notebook, she will achieve a mind like water, stress-free productivity, and eternal bliss. Until then, she writes the occasional blog post and enjoys her life as a nonprofit professional in Los Angeles. Her less productive blog posts can be found here.