Upload speed suks.
There is no VIRUS except if owner upload them , there are some ads with virus like every ADS in the worldLet's see... So, it is a virus, don't like this one try PinapFile and get $5-$7 per install.
OP: If you are using deceptive ads or virus installs using this brand new service be sure to provide download links from another domain. The problem with virus installs is that you will get tons of warnings.