I am working on an aggregation website that collects reviews about specific products from various websites. The site has many thousands of outbound links (with "nofollow" attributes) to the content source websites where the reviews were collected from.
The site has far more outbound links than inbound links and I have read that this is bad for SEO.
Would adding an intermediate «You are leaving this site» disclaimer/warning page like this hurt search engine rankings?
And can you provide any links about this topic?
p.s. The exit page would be a POST form instead of a script, that notifies the user that he/she is leaving this site and provides a button to continue to the other website.
p.p.s This kind of idea is implemented on many forums, aggregation websites with the purpose of warning the user that he/she is leaving this site and to block search engine bots from following those links because search bots do not submit forms.