Hi Leon,
What's your thoughts on "Angela & Paul" style backlinks? (Backlinks from sites where the root domain is high PageRank, PR7 or PR8, but the actual link placement is on a newly generated user profile page with no backlinks or PageRank).
Everyone reckons that since Penguin these are the way to go, and are busy setting up profile pages on Bing, Mozilla, Microsoft, Disqus, Adobe, Flickr, etc, but I'm not convinced. Can backlinks on an unknown, unranked page that you just created out of nowhere really provide you with "backlink juice", just because the root domain is authoritative, or is this just Fools Gold for newbies?
Also, what are your thoughts on backlinks from sites that have "lingering" PageRank? What I mean is, everyday sites that have genuine PR5 or PR6 get closed, change domain or extention, or change hands. The backlinks dry up and get removed, but since the PageRank doesn't update for 6 months, Google will continue to show them as genuine PR5 or PR6, even though they have no backlinks. Even though these sites will probably drop to PR0 when the next update happens, they are currently PR5 or PR6, so are they worth placing backlinks on? Does Google still see these as PR6 backlinks, or does it see these as redundant "soon to be PR0 backlinks"?
Any thoughts?