Google Wave

So I have joined some educator "nings" and the hype is Google Wave. I have communicated with everyone that I know that may have a pending invite out there (and some that I do not "yet" know), and I know that three people have invited me! So why am I not getting the invite from Google Wave? I hear that they have a lot of "stamps to lick". I can accept that, but in the interim, let's learn about Google Wave.