I've been considering trying out Jade and the only thing that has really stopped me thus far is the fact that I will have to re-write all my editor snippets to match the jade syntax. If you're currently using it what kind of effect has it had on your workflow? The learning curve seems to be quite low and apparently all the cool kids are using it. I've had my hands on HAML a few times whilst working on Rails apps and I liked what I saw there. I've been writing SASS/LESS for awhile now and initially it was a pain but now it's like second nature. What are your thoughts on not just Jade but also SASS/LESS pre-processing.