At last nights #dmbistro workshop I was introduced to Gqueues through Gennia Holder. Although it does require a small $25 yearly fee to use for it’s complete potential, the service is simple and easy to transform your messy to do list into an organized systematic workflow.
Here’s an excellent video by Henneke Labs that will walk through it.
If you’re questionable on the $25 yearly fee, the service offers a risk free trial for 2 weeks (no credit card required)
here’s a video on GQueues and how it can relate to GTD