Firefox OS (née Boot to Gecko) as just a Google Chrome OS wannabe, but I've read a few things recently that suggest it's a platform with some good ideas that might actually gain some traction. While there seems to be limited buzz about it in $illyValley, and some are predicting very low penetration next year, I want to be optimistic that it will develop into a platform with some relevance.
I'm attracted to Firefox OS because unlike Google Chrome OS or Android it's all
open all over the place, and unlike webOS it actually has institutional
FfOS's strategy is to target low-end smartphones and featurephones--a place that iOS will likely never go and where Android is going with only limited usability success. In addition to phones, I am wondering if FfOS might also be applicable to general embedded device development. Qt+QML seems to do nicely in this space, but I am more than slightly concerned about the future of Qt since being dumped by Nokia. webOS seems a good candidate for embedded work as well--as long as you subscribe to the webOS UI paradigm.
In any case, it's always nice to have viable alternatives, so I'll be rooting (!) for the ruddy canine.
*Looks like I might be wrong about this.