Here's more details about link farm for you: http://en.wikipedia.org/wiki/Link_farm They're similar since they both exchange links between sites.
they are not the same. you must avoid from link farm but you can use banner exchange networks to get more hits
they are different in terms of quantity. normally links farm got tons of links in one site, but banner exchange page are limited in term of no. link farm probably only place the anchor text and url link. but banner exchange can have Banner image, title, anchor text, dexcription, and links.
hello, could you to explain me, please, why banner farms forbidden?? if put a descriptions (2-3lines) above each banner would it be still a banner farm? thank you
If you have a site that displays ads, I would strongly suggest that you make sure that no PR is passed to the URL the ad sends you to. So if you have a site http://www.example.com/ that has a banner ad on it for another site http://www.advertiser.com/ you want to be SURE that PR is not passed to http://www.advertiser.com through the banner ad link. This is typically done one of two ways: 1) add a rel="nofollow" attribute to the banner ad link (<a href="http://www.advertiser.com/" rel="nofollow"><img src="URLofBannerAd" alt="Buy my product at advertiser.com"></a>) or 2) use a redirector page that is set to noindex via a robots.txt entry so that if someone clicks on the banner ad then they are first taking to a redirector page on your site (which never gets indexed) and then forwarded to http://www.advertiser.com/ (<a href="http://www.example.com/redirector.php?url=<insert encoded URL for http://www.advertiser.com/>"><img src="URLofBannerAd" alt="Buy my product at advertiser.com"></a> where the page http://www.example.com/redirector.php is disallowed in example.com's robots.txt) If you don't use one of these methods for stopping the flow of PR to the advertisers then you could get reported for selling links and it would likely fail a manual review by Google resulting in a penalty of your URL.
Canonical, thank you very much for reply (not everything clear for me, but I'll try to get some info about it) can I use your advices for banners from my Affil.programs? (I mean how will they control my sales if I'll change their codes?) I'm sorry for my ??s, just I'm new in online business best regards