gumstix has had a very active Linux embedded forum. rPi...any of the single board linux systems - Beagle, Chumby, pcDuino all have their communities. I worked several years on PC/104 stuff before using, get this, "Windows Embedded". How's that for an oxymoron? - didn't seem to be much "embedded" about it, rather just hard to cool, small PC. Landon