yes its all about the dumping factor if the outgoing links are more than 85% then it is harmful to det good pr
not really. think about it, what about social bookmarking websites? They have so many OB backlinks and they have PR values of around 7 or 8
Yes, Everyone know that out bound links create problem in search engine. According to google if your site has lot of outbound link then it is negative point. We can use no follow attribute for out bound links. Google never count it.
If you have many outgoing links in a single page then this gonna harm your search engine rank although you make it no follow.
you should always try to have minimum outgoing links & the outgoing links are sold then in that case they are really harmful