As much as a heads up as a deal...
I have been looking to buy some smart bulbs for a while but couldn't quite justify the expense. I had looked at Yeelights before but was put off with the lack of compatibility with the Echo.
However, they are now compatible, I have bought a couple and they work well. They don't need a hub so a much cheaper way to add smart bulbs to the home than some alternatives.
Echo functionality is still in the beta stage but it works well with a few minor limitations. Anyone can participate in the beta, instructions here:http://forum.yeelight.com/t/call-for-beta-users-for-ifttt-and-echo/193