You see a lot about this topic.
Try as I might, I've yet to find such install when I uncheck all the boxes. It's well known the boxes are checked and we must uncheck them and you can always opt for the direct download as well.
If you find a download that really does this, I'll try it and see but so far I've done this dozens of times and not once did it install anything extra when I unchecked or opted out.
http://malwaretips.com/blogs/funmoods-search-toolbar-removal/ shows the screen and if you don't uncheck those boxes, it installs.
I will not enter into any debate that it is or is not a virus.
CNET has been my trusted site for information and download for many years. I was an early customer and use it every day. I recently used Download.com to install some new Windows software on my PC. I was asked to install your new ad supported downloader, which I did because I trust CNET. It installed a product called "FunMoods" on my PC, I believe without my permission and it hijacked my browser, changed my home page and will NOT uninstall from my PC. It is malware pure and simple and according to the searches I've done, comes from CNET itself. Many people are angry about this because you are such a trusted site. I hope this is something CNET is not aware of, or maybe I am misinformed, but my PC is a mess right now.