I used to use Miro, for the better part of a year, and while I loved certain parts of it there were a few other things that eventually drove me away from using it. I got really tired of the odd crash, which while not a daily occurrence was still often enough to be quite irritating, and then also some videos just wouldn't play properly, and then there was the OBSCENE amount of RAM it used just idling in the background. I don't care what explanations the people over there kept coming up to justify why a glorified podcatcher was using ~150megs of RAM when minimized in the background doing NOTHING other than just checking some RSS feeds once an hour, that just irked me from day one and was a fairly major factor in why I stopped using it.
Now, it's been maybe half a year since I stopped using it, and maybe this 2.0 release is the bees knees fixing this and that, but unless they've gotten that RAM usage down I'll just make do with letting GoogleReader let me know when i can go stream my latest episodes.