Google Friendly URL Shortener



Google don,t crawl Bitly,s TinyURL,s and isgd,s Short links. But Google Crawling Click2info,s Short Links?
You can Search on Google as try (bit.ly/b) (tinyurl.com/b) (is.gd/b). These Shorteners have billon,s of hits Per Month. 
But Google Crawling & read new Shortner Click2info,s Short Links (click2.info/b) (click2.info/l) (click2.info/a).
What is the reason google don't read most populer Shortener,s Short Links? http://click2.info/