Here is a complete list of 100 active directories for seo professionals. S.N Directory Sites Name PR 01 http://www.sciencedirect.com/ 9 02 http://www.freefind.com/ 8 03 http://boingboing.net/ 8 04 http://www.aol.com/ 8 05 http://www.freefind.com/ 8 06 http://www.joanna-marach.com/ 8 07 http://vlib.org/ 8 08 http://technorati.com/ 7 09 http://www.dmoz.org/ 7 10 http://www.thomasnet.com/ 7 11 http://www.highrankdirectory.com/ 7 12…read more