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Touting itself as "the smart, stress-free way to have it all", the site offers users the ability to swap a range of goods and services that include doing the ironing, babysitting, business and hobby-related know-how, vacations and fashion.
"Feel free to borrow my holiday home if you have some great clothes to give away," wrote one user.
"So this is where I can get a makeover and fashion tips in return for some home-cooked meals," wrote another.
So far, the site does not carry advertisements, and Christie said she was determined to keep it "socially responsible".
(Reporting by Pauline Askin, Editing by Miral Fahmy)