i have the google tool bar myself and have tried many adware and spyware programs and none have ever found anything related to the google toolbar so my answer would be no its not spyware,, try this link if you want freeware pop up stoppers and it also gives a link at the bottom of the page to go to the shareware pop up stoppers many to try or to choose from ,,
http://www.webattack.com/Freeware/misctool...wpopblock.shtml