What it does

Advertising

Yes. Some shortcut icons are added to the desktop. Many more are added to the Favorites menu. More are on an IE toolbar called 'Accessories'. The process run on startup also occasionally pops up adverts.

Privacy violation

No.

Security issues

Yes. The startup process can download and execute arbitrary code from its controlling server.

Stability problems

Running the software may cause many 'dial-up connection' requests to appear if you are not connected. Windows seems to hang temporarily for a few minutes when this happens.

Removal

lop/Toolbar installations normally put a round icon in the system tray, try right-clicking this, choosing 'Menu', then on the resulting window, clicking 'Help', then 'Uninstall'. With newer variants you will have to answer an annoying riddle before it will go away