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.
Blubster Toolbar is a vile adware toolbar. Blubster Toolbar installs itself onto your computer without your consent and knowledge. It also installs a worthless toolbar and imports additional malware applications onto your machine. Blubster Toolbar has also the ability to generate large amounts of extremely intrusive pop-up advertisements. Blubster Toolbar may put your privacy and security at risk and, therefore, should be removed from your system as soon as possible.
Technical details (How to remove Blubster Toolbar(pop up))