Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
ThunderAdvise is a Chinese parasite that will connect to ad918.com, ad9178.com and other domains to download extremely annoying and intrusive advertising. ThunderAdvise is a serious threat to the security of your personal information on your computer. This parasite can be difficult to manually remove and may also download and install other files or programs such as rogue anti-spyware applications.
Technical details (How to remove Adware.ThunderAdvise(pop up))