Haven't used it but an interesting concept. From their site:
"Carriers often breach contracts by making changes without your permission: your opportunity to get out of the contract. When carriers make unauthorized changes they create the opportunity for customers to get out of their contracts. When they make changes we take action."
There seems to be a nascent trend toward products that "fight for you."
A few others that come to mind are Airhelp (Get comped for delayed, cancelled, or overbooked flights) and Fixed (The easiest way to fix a parking ticket, cc'ing @KatManalac who mentioned this on an early PH radio show).
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