Failover.ca - 2007:

"In computing, failover is the capability to switch over automatically to a redundant or standby computer server, system, or network upon the failure or abnormal termination of the previously active application, server, system, or network."

About 7,410,000 results on Google for "Failover"
Rsync.ca - 2008:

"Rsync is a software application for Unix and Windows systems which synchronizes files and directories from one location to another while minimizing data transfer using delta encoding when appropriate."

About 5,460,000 results on Google for "Rsync"
POP3.ca - 2011:

"In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by local e-mail clients to retrieve e-mail from a remote server over a TCP/IP connection. POP and IMAP are the two most prevalent Internet standard protocols for e-mail retrieval."

About 32,400,000 results on Google for "POP3"
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