PR-base - база англоязычных белых каталогов для набора PR.

PR-base - the base of English-speaking whites directories for a set of PR.

PR base - base of white catalogs in English, selected and sorted by PR. The base was going specifically for pumping PR English sites, and therefore contains only directories with a PR of 2 to 9.

So the database contains the English directories:

with PR 9 - 6 catalogs;

a PR 8 - 32 directory;

with PR 7 - 98 catalogs;

with PR 6 - 285 directory;

with a PR 5 - 528 directory;

with a PR 4 - 353 directory;

with 3 PR - 153 printed catalog;

with a PR 2 - 66 catalogs.

Thus only the base 1521 catalog! I can guarantee an increase after the run on this basis your site PR 5-6. I think the base is worth its $ 5 for such a result.