Underwhelming adoption rate could be due to limited launch.
Facebook has around 700 million monthly active mobile users, but the company's new Android-based Facebook Home service has only been downloaded from Google Play 500,000 times in five days, according to TechCrunch
Budding Home users must have the Facebook and Facebook Messenger apps for the feature to work, but theservice is only available for the newly released HTC First, as well as the HTC One X, HTC One X+, Samsung Galaxy S III and Samsung Galaxy Note II, which could be stunting growth.
Meanwhile, Facebook has confirmed it is in talks with Apple and Microsoft to launch Home for iOS and Windows, and recently introduced the interface's Chat Heads messaging feature to devices running the iPhone maker's OS.

http://www.mobile-ent.biz/news/read/...ve-days/021155