Freely distributed lists of high PR sites are virtually worthless or will become worthless soon enough. I'm sure you will have someone claim otherwise but its a fact and I'll lay out the reasons.
Its an established fact that Pagerank declines and divides according to a Google algorythym. It does so with every link coming from a page. If you get a link on a High PR site - lets say a PR 8 - thats great. Or maybe it isn't. See, that PR8 page is going to be divided by the amount of outgoing links when its passed on to your site. If there are a hundred links coming from that page no matter how you pat yourself on the back at linking from a PR 8 site you really didn't. That PR 8 juice will be divided by all the other posters. Its fashionable and cool to talk about high PR and PR 8 and PR 6 sites or I got this PR9 site but PR is like Cake.
You don't say you go this beautiflul 12 inch cake to take home with you if by the time you wrapped it up to take it home 70 other guests had taken a slice out of it. Thats not a cake to take home. Thats crumbs.
Fact is you would have been better off finding a PR 2 site that no one else or just a few are using than placing your link there. Further the more these lists are shared the more people who are notorious for committing to no restraint will be posting all kinds of links in all kinds of quantitites to those same sites. Its what many complain about with Angela's links even though she tries for that not to happen. soon those sites you shared will become no follow or have the links removed completely.
So my suggestion is next time you want to share backlink sites - don't. Or if you do you should do it by PM. IF not you wll just destroy any value they had for you and any value they would have had for anyone else. For those asking for free backlink lists. You are better off learning to find your own. Those actually have a chance at holding value.