Does google limit text advertising?

That is,some sites like traffic exchanges or social networks gives you some space for free or not to put text ads or banners ads..

I know that this is not against Google TOS but can anyone give any advice about this...I want some expert with much more knowledge than me to see beyond...

 

Im not an expert, but i dont see why they would.

 

You cannot buy\sell text links to increase your search results, this is search engine manipulation. However, if they are used as link exchanges, or traffic sources that is fine. Being that said, if it's sololy for that purpose you should have no problem using the nofollow attribute in the actual hyperlink then.

 

As long as you are not trying to sell extra PageRank it should be OK with Google.

 

Paid text links are against the Google Webmaster Guidelines... period.

Guidelines: http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=35769
Link Schemes: http://www.google.com/support/webmasters/bin/answer.py?answer=66356
Paid Text Links: http://www.google.com/support/webmasters/bin/answer.py?answer=66736

 

Do you not buy links for your clients?

 

Nope. I use the old quality relevant content concept

 

I dont know what that is, can you explain please?

 

why use the nofollow?Can you explain, if I am just using a text link within a network to promote my website?

Then what is SE manipulation?