You are here because you are noticing NetStream ads and its related coupons, banners, discounts, inline texts etc. on every webpage that you visit through the browser. This is a potentially unwanted program which means that it has been crafted by cyber criminals in order to cheat the innocent users and make money. The mode of money making process used by NetStream ads is promoting third party websites and get commission and funds in return that directly goes in the bank account of its creator. If you are involved in unsafe browsing, visiting porn websites, clicking on suspicious links to get freeware etc. then you can easily become a victim of this potentially unwanted program.
Such an adware always pretend itself to be helpful and promises to boost the overall browsing experience. It shows ads in which you could be interested. Actually, it scrutinizes the browsing behavior and pattern of users and customizes the bombarded ads to deceive the users. When user clicks on it then the webpage either gets redirected over unsafe domains and additionally questionable arbitrary files and codes gets downloaded in the background which are malware infection in reality. The keywords on which these ads are hyperlinked may be of your linking but it will never let you visit the webpage that it offers or which you want to visit.
Each notification and pop ups shown by NetStream ads can be a tricky scams to download useless programs and paid services. It normally contains misleading links with fake titles so be highly attentive regarding what you click on your browsers. This adware will severely degrade the browsing performance and your PC will come to death in coming days. So try to eliminate NetStream ads immediately.