Why does Google host such weird domains?

So I was playing around with reverse ips and domain name look ups ...and I did google for fun.

http://whois.webhosting.info/google.com

The results? The same ip that hosts google.com also hosts the following domains:

1 BAANKHUNYOMHOTEL.COM.
2 BIOSIFT.COM.
3 BOUWEISNOOB.COM.
4 CONSISTENCYINACTION.COM.
5 DACOTEC.NET.
6 DELRAYCOL.COM.
7 FUZHOUESE.ORG.
8 FUZHOUESE.ORG.
9 GOOGLE.COM.
10 NEWTOSWINGING.COM.
11 PASSMELT.ORG.
12 SEXTGP.COM.
13 SPYWAREDETECT.NET.
14 SWINGINGCENTRAL.COM.
15 UPGRADEMYWIFE.COM.
16 UPGRADEMYWIFE.COM.
17 ZG3DCAI.COM.

From what I can gather all of these names are hosted on a Google server (and they all go to google.com)..weird? Can anyone shed some light on this?

The google website runs on a shared server. They pay $2.99 a month which, I think, is a pretty good deal.

upgrademywife.com - a new site from google...

"Add this small microchip to your wifes brain, then control her via a handset remote... Want her to shut it, hit the mute button... Want to turn up her sluttyness level... the power is in your hands! - Brought to you by Google Labs!"

;)

they get a lot of additional hits due to search typos. especially from: BAANKHUNYOMHOTEL.COM

i googled one of those domains FUZHOUESE.ORG
and it turns out it used to be a forum or something like that, in chinese, or something like that.

http://72.14.207.104/search?q=cache:...s&ct=clnk&cd=4

So, if you publish a bad opinion of google in your site, google buys the domain, and makes people forget your site ever existed.