If you use the internet a lot, then you probably use Google a lot and one or several of its many free services like Gmail, YouTube, Alerts etc. This also means that Google probably knows quite a bit about you.
If you are one of the unfortunate people who didn't receive an invite to preview Google Wave, then there is some solace for you. Lifehacker are one of the chosen few and they have posted an excellent article about their initial usage here http://lifehacker.com/5370738/google-wave-first-look
This provides an excellent insight into the users view of Google Wave's myriad new functions.
And, because we're really hopeful about the promise of Google Wave, here's a link to Google's latest 'Overview' video.