GOTD is always completely clean, apart from some of the jokes on the forum, . . . or if WR hasn't washed behind his huge Wabbit ears lately LOL!
By way of the thread title Microsoft's definition of malware probably (as in does!) include the many various toolbars classed as adware, torrent P2P files, many keygens and such-like most of which is completely harmless! I would guess a HUGE proportion of MS's ratio link to false positives!
From researching free games, a supposedly notorious risk (ROFL!! :)) I doubt that 1 in 10000 downloads might carry any risk, and Google now seems not to list sites that have a known drive-by download risk. If you use AVG link scanner you can also almost entirely avoid any sites that link to malware. Some older games get false flagged as positives too. Comodo/AVG have sometimes listed Gamehouse downloader as malware simply because it accesses the Internet from your computer to download the Gamehouse game! And you can't get more innocuous and innocent than that!
It was riskier previously to search for free games downloads, but with modern firewalls and Windows updates, and good AV programs, any risk is very minimal, and there are many more good (safe!) sites out there these days.
PS has Beta anything to do with beta-carotene as found in carrots sniff sniff ?! Does this mean WR himself is still in Beta? !