Twitter put to new use

So you thought Twitter was only for twits? A substantial use of it that I heard of this morning was that the surgeons are twittering the world (at the family's behest) about the moment to moment progress of a kidney transplant from a dad to his three year old son. The family is already a twittering kind of clan and wanted to use the Twitter platform to promote the need for organ donations around the world. The public relations division of the hospital jumped on the idea and have it all going this morning. So, let's think of other relevant ways to use Twitter to make learning links of substance.