no effect on suppliers directory keyword

i continously work on suppliers directory keyword from last two months but there is no effect on their ranking first it came to 10 position above after that it again goes its earlier position and there is no effect on this keyword what i can do for this i done bookmarking,blog comment,directory etc but there is no effect in its ranking

 

Try other strategies like article marketing. Write unique content and submit them to high PR directories. Also write a press release and submit it to Press Release directories.

 

but i done these activities also but no effect

 

try use higher pr as social book marking, article submission, blog, forum etc.

 

Choose the article directories which you submit your articles to. Make sure they have high PR.

 

Go for article and press release submissions. It should give you some improvements if done correctly. Plus, keep building backlinks on a regular basis. It can take time to rank, especially when Google is changing things constantly.