There are instances of adware coming through Clicksor ads, and that is surely a concern as many of the web site visitors might get annoyed about adware. In order to avoid any adware, we recommend putting just one type of ad rather than combining most of the available ad types in a page. Unlike adsense, Clicksor is little relaxed of any invalid click activity. Either because of lack of advertiser base or because of poor content matching, their ads some times are not contextual. Their payout option at 50$ is not also that attractive for many small publishers. These things aside, Clicksor can be an alternative for adsense.