Latest Apple iMac 27" (2011) user agents:

User Agent	Browser	Platform
Reeder/1020.09.00 CFNetwork/596.2.3 Darwin/12.2.0 (x86_64) (iMac12,2)	Unknown	Mac 10
Reeder/1020.09.00 CFNetwork/596.2.3 Darwin/12.2.0 (x86_64) (iMac12%2C2)	Unknown	Mac 10