Google New URL For Web Cache: webcache.googleusercontent.com

Earlier Google used to show cache for a website abc.com like this:
http://74.125.153.132/search?sourceid=navclient-ff&ie=UTF-8&q=cache%3Ahttp%3A%2F%2Fwww.abc.com%2F

But now it has changed the url to http://webcache.googleusercontent.com/... like this:
http://webcache.googleusercontent.com/search?q=cache:5rXV0ZMvlY0J:www.google.com/intl/rm/remove.html+google+cache+urls&cd=2&hl=en&ct=clnk

There seems to be lot of changes in April month. Earlier a PR and backlink update on 3rd April, 2010. Know change in the url for Google Cache version.

Also, when you search on Google with this webcache.googleusercontent.com, you will find in a search result a link to cache page url i.e: http://webcache.googleusercontent.com/search?q=cache%3Awww.leechermods.com.

Or just Google this:
site:webcache.googleusercontent.com webcache.googleusercontent.com

you will find about 1,100 results.

Its interesting to see Google is showing cache version in its search result.