I have an idea for a service on your mobile phone to provide the user with a witty remark or comeback or insult to deliver to another person. You all know that situation of thinking of a witty remark too late http://wordsmith.org/words/esprit_d_escalier.html.
This service would instantly send you the remark to your phone.
How would I use or sell my idea?
Sorry I don’t have any specific advice for you, but this quote from the link you provided:
Gave me a good laugh, seeing as I fancy myself a writer and am frequently afflicted by it. (as well as general problems putting coherent thoughts into articulate prose during the course of normal speech)