meta nofollow... will this help site ranking?

[charlesgan]

suddently think of this today, by using the meta index nofollow, this can prevent the bot from crawling to external site, and thus preventing links to unrelevant site, and to bad neighbourhood as well. is there any proof that this helps page ranking?

[bathurst_guy]

There is no proof on anything with search engines.

Wikipedia is taking this no-follow option soon on all outbound sites, mostly to minimise spamming.

[Kolyan]

u can use rel="nofollow" for every link to avoid bots following the links