Using NoFollow on Outbound Links?

How do you use the NoFollow anchor in your outbound links?
I usually NoFollow all my social bookmarks, widgets, and sometimes if I link to a site multiple times in one article (I'll have a DoFollow at the bottom of the post).

I know some people NoFollow ALL their outbounds.
I personally think that's a bit dangerous though as Google always likes changing its policies and could punish that type of grey-hat behavior.

Just was wondering what everyone thought was most effective?

Generally speaking to make your links appear natural it is good to get 10 percent of your links as Nofollow and concentrate on .edu and/or .gov links as these links have more strength for your site.

I have heard 'SEO experts' talk about ALL outbound links as NoFollow too, but this makes no sense to me - if everyone did that then Google wouldn't work!  So I always do follow any useful or proper website, or any that i just like.

I'm sure I read somewhere on Google about making paid adverts NoFollow, cos they pay for the advert and not the link (unless they DID pay for the link, of course!!).

I've never heard of '10 percent of your links as Nofollow' to make your links appear natural - I can't see following such a rule as making you 'appear natural' - in my opinion :)

So you are saying that .gov and .edu backlinks which most of them are nofollow will have no relative impact on your site?  NoFollow has many applications and even Matt Cutts of Google retracted what he said in his video that Nofollow has relevancy.  Watch the video for yourself, as there are many companies getting great traffic from Nofollow links.

Um, I said no such thing.  This thread is about OUTBOUND links, and whether to make them nofollow - that's what I was 'saying'.

I do think a BACKLINK from a .gov or .edu site would be great :)

What video are you talking about, sounds interesting..?

Matt Cutt's Video on Nofollow which explains in two minutes how you can drive traffic from other sources.

http://www.youtube.com/watch?v=g37bwBlifnk&feature=relmfu

PageRank relies on the uniquely democratic nature of the web by using its vast link structure as an indicator of an individual page's value. In essence, Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Votes cast by pages that are themselves "important" weigh more heavily and help to make other pages "important."

And Google will get rid of the extraneous non relative links in the page graph, thereby diminishing PR if so.