Does adsense use radian6 crawlers to monitor sites?

Ive been noticing them on my site with IP address 142.166.3.*

Is this an advantage for publishers or disadvantage?

BTW here is their site http://www.radian6.com/

EDIT I GUESS GOOGLE USES THEM TO MONITOR SITES...

 

Huh? Wha?

All the Google crawlers at my site have Google agent-ID's and have IPs that are owned by Google..

 

Huuuh..... Google Bots? And that's it.

 

I know about those ones but just google 142.166.3.125

and u will see what I mean also check your log to see if they've been on your site

 

If i see an IP like that sucking up too many pages at my site, it gets banned:

IP: 142.166.3.125
OrgName: Stentor National Integrated Communications Network
OrgID: SNI1
Address: One Brunswick Square
City: Saint John
StateProv: NB
PostalCode: E2L-4K2
Country: CA

NetRange: 142.166.0.0 - 142.166.255.255

 

I found that too but check out these link

http://cleverhack.com/2007/12/16/radian6-monitors-you/

How do I block them using vbulletin?

 

More people are finding this in their blogs too

http://blog.layer2.org/2007/10/15/who-the-heck-is-1421663123-radianrss-10/

http://hackd.net/2007/11/05/what-is-radianrss/