Note that many websites have their own advertising, unrelated to adware.
It shows Targeted adds on users computer based on the content of users search.
From Authors EULA:
1.Web3000.com and JSoft Consulting may provide aggregate statistics about customers such as your traffic patterns, and related site information to reputable third-party vendors in order for Web3000.com and JSoft Consulting to obtain valuable promotional offers to provide to you.
2.In order to provide this service, Web3000.com and JSoft Consulting collect information on your web usage that remains anonymous to third parties.
3.Without revealing your Personal Information to third parties, Web3000.com and JSoft Consulting will seek out high-value offers and great deals from commercial partners and advertisers that match your interests.