Bulk bookmarking can sink new/thin website.
I apologize if I don't get you completely. You said about "small bookmarking campaign" caused your site to lose positions then said bulk bookmarking can sink new site.
How many of them do you consider bulk and small? All 50 of them?
Could you please give some insight on the type of backlinks (esp the Authority)?
High authority. For examples related blogs with pr 3-5 and almost no OBLs. Blogs with no or almost no comments, related forums,
How do you find these low OBL, no to few comment blogs?


it's a WP site? if yes, what are your favorite plugins?