I had an email discussion with Lee regarding outbound links the other day. We were going to review blogs here at dS until we decided it would render too much exit points for our readers. Now outbound links is good, but just like everything else in life no matter how good something is if you get too much of it it’s never good.
Darren at ProBlogger.com seem to have the same struggle in this matter:
I know of numerous Adsense publishers swear by not giving their readers any links to click on their sites unless they go to another page on the site or unless they have some money making ability.
I personally don’t mind other competing outbound links. Most of my blog have many of them and seem to do well – in fact I believe they are part of the reason my sites build traffic (a story for another day) – but I suspect if I took them all off today my Adsense CTR would go up and that I’d probably grow my page impressions. I guess it’s about making choices to do with your blog’s priorities.
I still honestly think that creditting our sources are necessary, but while maintaining a good balance of the blog-ecosystem we need to use outbound links sparingly in order to build good readership. Don’t show your visitors out before they would like to, it’s almost rude! 
Any input on this? Leave a comment below.