not really... I've got A+, which is fairly worthless. great if I ever need it, but they typically want the O stuff (+ or -... cant remember). my friend has O and they constantly send him spam mail to go give blood! he's totally in demand! I'd say he should sell it for like $50-100!! I mean, they sell it to patients in accidents for hundreds more so... why not?
actually, since you can give blood like what, once a month(?), you should go online and google search for a listing of blood donation centers. usually they give you a list of upcoming locations AND WHAT THEY ARE OFFERING. like our Walmart tends to give away $10 gift certificates all the time and sometimes I've seen cool stuff like full 1 day Disney passes. so if you're going to give it away, you might as well as shop for the best deals! so unless you really really like getting drained for fun or whatever noble reasons, then you should be careful with who you just hand over a bucket of your blood to! I mean, we had a Chic Fil A (or whatever) here that gave a free sandwich... not a full meal, drink not included, no fries... just a $1 sandwich. not worth it if you could get a Disney pass elsewhere! >)