mjvndhsb

i've noticed that backlinks are having a more or less immediate effect on my site's SERPS. when i added a link to my site from another (PR4 with anchor text) it boosted my site to #10 2-3 days later. The page linking to my site was then overwritten (by accident) and I lost the link causing my site to drop to #36 2-3 days later. i've tested this twice and it seems to be consistent.

my question is, is it the anchor text boosting my serps or the pr or both bearing in mind that my site has a pr0?

__________________
Rosetta Stone Chinese
Rosetta Stone Arabic