GPS jammers illegality

Due to the reinforcement of GPS positions because of expanding the scope of its application, recently the United States security services had the goal of fighting with the extension of GPS blockers (applications that stop the work of GPS-based devices) for the support of various services. This idea seemed to be admirable convincing Google to limit the Internet searching of GPS disablers, according to Bob Brewin, the main designer of nextgov.com, this concept worked at least for some time.
On the seventh of April a main developer, who had been examining the GNSS problems for many years, was impressed with the amount of links in his blog, which Google showed on request "GPS jammer" (GPS jamming signal). Brewin immediately connected with the guys from Google. They told him that "The GPS-jammers’ links contradict to the company policy, which forbits advertising of hacking and some suitable technology", and that they will remove the problem. Indeed, the search on request "GPS jammer" have no effect in the evening. But on request "GPS jammer" with note "Shopping" Google found three ads on the GPS-jammers’ sites.
And there were lots of pages about those blockers in other SE. In February, during the conference British expert David Last mentioned how he received 185 thousands links on this request. The number of GPS-jammers’ sites increased by 50% just in a month. The limitation of search of the exact phrase "gps jammer" by Google will remove approximately 106000 references – but it is a poor relief.