When I search for network cable on google I see ads for network cables. If I go to youtube 30 minute later and watch a totally non related movie I still see network cables. Also on many other sites. Is this new? Where can I do this?
You can do ads on Youtube (www.youtube.com/t/advertising)... Guess Google is your cookie to show you ads based on the last search...
there are ad networks that will sell you adspace based on users cookies that they record once they hit a site in their network...so you can display your ad also...its called performance display and a few of the large advertising networks are beginning to offer this. like adconian