Nothing. I like to let others spend the time investigating all of the options, trying things out, letting the market become saturated enough to drop prices, and then I'll read summaries of all of their collective experiences and consider possibly adopting.
There are already more good ideas out there than I could possibly all implement, I see no need to go out on my own to take all the risk just to stroke an ego of being "early." Eg., FIRE: thanks so much for everyone else creating all of the blog posts, forum posts, and hashing out all of the specifics. Now I just have to read and follow.