"Music Unlimited", a full-catalog streaming service has been available as an additional tier or as a standalone subscription since late 2016. Amazon Music's streaming music catalog is accessible from the Amazon.com web player using HTML DRM extensions or from player apps for multiple platforms including macOS, iOS, Windows, Android, FireOS, Alexa devices, and some automobiles and smart TVs. Amazon's purchasable music catalog is accessible from the Amazon.com web site by searching for an artist or title name, or via a store embedded in many, but not all, of the player apps. To download purchased music, Amazon offers either the Amazon Music player (which runs on Windows 7 or later and Mac OS X 10.9 and later) or a zip file of MP3s downloaded from Amazon's web player. Amazon Music previously offered additional applications, such as one for Blackberry and one for Palm. These are no longer offered. Amazon also previously offered a separate app for Mac OS X and Windows called the Amazon Music Downloader which is no longer available. The downloader was purely for downloading purchased tracks, it did not offer music playback capabilities. In November 2018 it was announced that Amazon Music will be available on Android TV. In August 2019, Amazon Music got its first smartwatch app available on selected Garmin smartwatches. On February 1, 2008, Pepsi introduced a Pepsi Stuff promotion in partnership with Amazon MP3. Customers can exchange points offered on 4 billion Pepsi bottles for, among other prizes, MP3 downloads from Warner, EMI, and Sony BMG (though not Universal). Rockstar Games' 2008 title "Grand Theft Auto IV" connects to Amazon MP3. Players can register on the Rockstar Games Social Club web site to receive e-mail outside the game containing a link to buy marked songs from Amazon MP3. Myspace has sold music from Amazon MP3 as part of its MySpace Music feature since September 2008. Initial reaction to Amazon MP3 was generally positive. The unofficial Apple Weblog praised the lack of DRM especially given that track prices were cheaper than iTunes Plus songs at launch, but the reviewer considered the user experience better in iTunes than on the Amazon web site. Om Malik of GigaOM also praised the lack of DRM and the high bitrate but disliked the need to install another application to download albums. Overall, the reviewer said "…I think it makes sense for everyone to browse the Amazon store before hitting the 'buy' button on iTunes." A 2007 study by Eliot Van Buskirk of "Wired News"'s "Listening Post" blog investigated whether Amazon MP3 was watermarking tracks with personally identifiable information.