nofollow backlink have some value in Google or Is only dofollow backlink is important for get high rank ?:'(
do follow links is really matter's for page rank.....
they still have some value for google cause it looks more natural
According to me.. No follow links are little less important in comparison of do follow.
dofollow links are more valueble than nofollow links. Dofollow links helping to get better page rank.
But also the nofollow links have some role on our website. they can give traffic to our site.
Nofollow do have some value in google, see this article - http://www.socialseo.com/blog/an-experiment-nofollow-links-do-pass-value-and-rankings-in-google.html - they don't count as much but they can help and are also a source of traffic so don't spend all your time looking for dofollow.
Dofollow links a re really handy in increasing your PR and ranking in search engine as well.