i have a couple of people i know at Krome and they are really great guys, so i'm really rooting for this to be a success.Backbone is not involved. Krome is doing this all.

that said, it does lead to an interesting conflict - we already have games out on XBLA like Frogger, Scramble etc as 400/800 point games. Given the ROMS have achievements too i can only assume that the roms carry different cheeves and that perhaps we have seen the end of arcade conversions to XBLA.
IF this is a "rom plug in and play" type solution then it could be of some interest on the X360 front. Don't really see the attraction on the PC front as MAME sort of kills things though if online multiplay is integrated as standard a la Kaillera , repleat with online leaderboards, then that might bump interest... though again... i think X360 is more attractive on that front.
Would be awesome if the emu is up to RSG and Sega Rally... though i doubt it is for some reason.