Biden forgets his website "number"

It strikes me as a little odd that on one had we've got the "blackberry" president Obama who can't live without his mobile device; and on the other hand we've got vice president Biden who can't remember his website "number".  Where did these two meet?  This clip is getting tons of hits on YouTube and is cause for the VP to be a little embarrassed.  I wonder if he's ever heard of YouTube...