Servefeed popups, also referred to as cpv.servefeed.info, is a redirect attack powered by revised version of infamous trojan. The infection this time is aimed at featuring various counterfeited tools, including misleading search engines that pretend to combine the powers of major websites in their field (Google, Bing etc), but, as a matter of fact, impose on users a list of totally misleading urls; misleading websites for deriving info from the web is but one of many directions for the trickery development.
Another example is Registry Defender advertisement. The said program is a fake computer system optimizer. If you have been unfortunate to get it installed on your PC, never mind the way, get rid of Registry Defender using the same tool as for Servefeed popup removal.
The scam inception happens on trusted websites, for it is governed by infection within your computer system. For example, there is a user benjoken who posted a detailed comment saying the popups with caption cpv.servefeed.info occurred on CNN website and then brought to various evidently tricky web-pages.
To get rid of cpv.servefeed.info adware or Servefeed popups and other infections on your PC, proceed to free scan with the solution recommended here.
The example of Servefeed popups (screenshot):