How Annoying Deals4U/Deals4You is!
Deals4U/Deals4You may manifest itself as an innocuous add-on/extension on users' web browsers. Actually, this ad-supported thing does pretty well in playing havoc and screwing up things. Ads by Deals4U with sufficient skills to do what a browser hijacker out there does could piss you off badly soon once it makes its way to the core of your browser.
