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http://www.diablofans.com/forums/diablo-iii-general-forums/diablo-iii-general-discussion/98628-rimeheart-proc-cooldown
http://www.diablofans.com/forums/diablo-iii-class-forums/monk-the-inner-sanctuary/97866-rimeheart-builds
http://www.diablofans.com/forums/diablo-iii-class-forums/wizard-the-ancient-repositories/93777-rimeheart
http://www.diablofans.com/forums/diablo-iii-class-forums/barbarian-bastions-keep/96885-is-rimeheart-viable
http://www.diablofans.com/forums/diablo-iii-class-forums/barbarian-bastions-keep/93995-found-almost-perfect-rimeheart-see-pic-is-this
Which are all threads about Rimeheart and they are all quite recent and all have some valuable information in them.