It is a good idea to provide sources of the information such as a link to the original web page that the info was quoted from.

It's pretty sad, but it's true.. some free apps aren't actually free; they are provided with spyware/adware tracking tools built in.

Other companies use the tracking tools to gather popular interest information, or try to hook the users into purchasing other applications via pop-ups related to the application they downloaded.. Some will even pop-up links to other software vendor sites.

The really bad ones actually hijack the computer homepage and registry and insist there is some "INFECTION" and in order to get rid of the infection, the user is prompted to purchase a license to the application to remove the infection... That is illegal, but they still do it, and most times it's aquired just by vissiting a website, without actually clicking on any downloads, or without the users knowledge/permission.

When trying out software that is "FREE" I prefer to use TRIAL software that is limmited in function or is limmited via number of runs, or time in days/weeks before it becomes disabled. I recommend sticking to well known software companies when trying out software.. Their programs are less likely to include adware/spyware payloads. Some apps aren't very good, a trial to see if it does what you need it to do before you buy is a nice feature, as long as it doesn't take advantage of the downloader by including spyware/adware etc.