For example: If someone links to your site using target _blank in the link will that decrease the PR transfer? A bit off topic but: If someone links to your site, but not through the homepage (which is PR 5) but through a link page (which is PR N/A) would that contain no PR transfer (like not from a PR 5 site)? And: Do link exchanges increase PR because I have seen some articles saying no?
Could someone please answer my questions? Also is it a good idea to create a Facebook account for a website?