Matt Crosslin reinvents the personal learning environment, and calls it the social learning environment. Not to sound snarky, but isn't that what this sounds like: "This class will be assigned a unique tag, such as 'eng1301sp10.' This tag will be connected with the class on the SLE server.... The SLE will then troll through all of the RSS feeds for each connected service the student has added, looking for unique course tags." It's still a good idea, but I thing Crosslin would benefit from talking to people like Scott Wilson, Graham Attwell and Tony Hirst (and maybe looking at how we ran the Connectivism course. Or maybe this PLE paper, one of the many resources reposted by D'Arcy Norman's blog today (heh).