It’s short for “recoup,” as in “recoup your investment on your awesome jet pack.” (We’re kidding; there are no jetpacks for rent on Quupe.)
We have no plans to change it. We like that it’s different. We named it in the grand tradition of oddball company names, a la Google, Skype, Etsy, Twitter, and Hulu. Like many of those companies, we think that if an idea’s great, it doesn’t really matter what you call it.