Adware
Adware, is a more legitimate form of freeware.
Similar to spyware, adwares are advertising materials which are packaged into a software or program and are installed automatically once that particular program or software is added into the computer system.
Some forms of adware, on the other hand, download advertising contents as a particular application is being utilized.
It is quite unfortunate that most of the adware programs take the form of spywares that is they track and report user information to program authors.
