Today I was looking through my link profile for one of my site and found lots of deindexed links which I made through BMR. So I went through each and every post I made on BMR to see how many articles are still indexed. I started using BMR for this site from last January. So far, I have made 60 post on BMR. And here are my results as of today after 1 year using this service. Total post created over year - 61 Total indexed pages as of today - 29 Percentage of indexed pages = 47.5% So total 31 post are deindexed. I can't say whether google just deindexed only my post or it deindexed entire BMR site. [I think BMR site is completely deindexed]. Irony is that, the bookmar created by BMR are still indexed in google. So if i do query on google i can find bookmarking sites but can't find BMR sites. Don't get me wrong. BMR is still best high pr network. This is the network that brought my site to first page. But after seeing the result, I can say that though BMR helped get my site on page 1, I need different backlinks [as a backup] to maintain my site there. And as you know, BMR just use only unique articles, still it has got hit by google deindexing [with almost half of the sites are deleted from google]. Now you can just imagine what would happen to other high pr networks who allow garbage spun content. My conclusion is , these High PR networks have a place in seo plan, to get that boost but to maintain your ranking, you need "Quality links which will stay indexed in google for sure".