Over the Summer I read about a surprising side affect of the recession: blood drive donations were down. Fewer employees hiding out in cubicles translated to fewer arms available to give blood. Blood banks around the nation suffered a second blow this Fall due to swine flu outbreaks, when many blood drives at schools as well as businesses were canceled due to a high volume of absenteeism credited to the H1N1 virus.In light of the dwindling blood supply, why not give a charitable gift this year that truly keeps on giving. You can donate blood. Think of it as an altruistic twist on the vampire phenomenon sweeping the nation. Not sure what to expect? Here are a few details on giving blood for the first time.