Note that many websites have their own advertising, unrelated to adware.
Provides a DLL for "ad supported software". In short this means that some shareware authors incorporate this system which pops up ads in exchange for some of the revenue this generates. If you uninstall this some "advertiser supported software" will probably cease to function.
Some analysis of the system shows that this has the capability of sending out (in XML format) various information about where it is installed, like PC information (RAM, Diskspace,...) and a list of installed applications.
It also containst some references to "VX2".
Go to control panel, "Add/Remove Programs", select the entry "twain-tech".