that's true,
don't ever trade link ie ( buy or sell ) try to get link naturally, go for one way links only. Someday Google may find that these links are not natural but are traded then it may ban your site affecting ranking.

anyone else have more throughts as I wonder how G can find out which links are traded or nutural, sure that they can not pick up by hand one by one on all website.

Thank you for your suggestions.

They can tell. That's why sites like phpbb.com can't pass PR.

they do find it out, if the advertised domain is to be found on other known "i sell my links" sites & then you are flagged too, better don't do it

Yes, I would be careful with this as it has been hinted that Google have built this into their ranking algorithm.

If in doubt, don't risk it!

Google just wrote a good blog post about how they are cracking down on link manipulation: http://googlewebmastercentral.blogsp...opularity.html

Moral of the story: create good content, get quality one way links.

Excellent article, thanks.

I was reading http://www.mattcutts.com/blog/text-links-and-pagerank/
and my understanding of it was that if you sell links on your site, your site's ranking won't be hurt, but your links to other websites won't hold much weight. (That's not a big deal to me because I don't really care how my PR affects the sites I link to. I post links that I think my visitors will find useful.)

So that would mean that if I sold text links, my external links wouldn't count toward increasing my advertisers' page ranking. That's a good thing, though, because it would basically force advertisers to try to advertise in places that encouraged website visitors to actually click on the links rather than buying tiny text links at the bottom of a page to increase PR. This is the main reason why PPC text ads and banner ads seem more "ethical" to Google. Their goal is to generate clicks, not PR boosts. I think text links are fine as long as they are being positioned the same way PPC and banners are positioned, so that's how I sell them. Such links have been around before Google and PR ever existed.

I say, if you're going to try to buy text links, buy links that have a chance of being clicked on, not just for PR. If you're going to sell text links, position them for visitors to click, and use nofollow attributes if you really want to reduce the number of external links on your page.

Very good article... i will defenetly bookmark this blog