What sites are the strongest

I have a site the has been around but I need to build strong high pr backlinks paid or free sites. My site is in the stock market do you guys have any suggestions or a list of strong sites

 

Have you tried with the following sites:

digg
delicious
blogger.com
faves.com
folkid.com
WF Forum
Mixx.com
EZA
GoArticles

There are more, but I am sure if you can get at least 10 links each from above(other than digg.com) that would be fine....

 

For me strong sites are those how have a heavy positive reputation online and have been around for a while such as: http://www.forex.com

 

v7n is the best directory, also heck with webmaster forums... not much expensive.. But if go for some big sites expensive and almost are nofollow

 

I will try them if anyone else has anymore please post

 

Bidding directories always seem to help me - as long as their is no adult or gambling website on the home page of the directories.

 

keep building links....they are the best way to build a strong site....and remember patience is the key

 

You will not get any PR benefit from DIGG or any social bookmark sites. You best bet is to try do follow blogs and forums of similar niche.