I think I can predict that the moderators don't use or endorse or advise folk use those products.
My students have been downloading some of the Iobit free software. Advanced System Care 7, Iobit Smart Defrag and Iobit Uninstaller. As of a few months ago they discovered that Iobit has put in a SPAM program called Spigot-Yahoo. Once you download and install or update neglecting to decline any additional software with the install you get this spam. It redirects you homepage to Yahoo-Spigot no matter what tou decide to use.
I contacted Iobit who denied the claim and told me to just uninstall the tool bar, yeah right!!
So beware, it took 5 geeks and 5 days to finally get rid of it.