I never scan any freeware programs that I get from freeware sites. Many software sites scan all of the files before they list them on their site. Even if they don't, they would quickly find out from their users that a file has a virus in it and would remove that file.
Now if you download a file from a crack, hacker, warez, or similar site, then, yes, there is a possibility that it could have a virus or something in it.
I would like to correct my first post. I just checked out freeware.com and it is not the same thing as download.com. I am sure that it was when I made the first post, but maybe something happened since then.