HOUSTON — A few short weeks ago, Garden Guy was just a mom-and-pop landscaping business that promoted itself as "making Houston beautiful since 1991" and promised to treat its customers with respect and honesty. Since then, though, the business has been vilified around the world as a bunch of bigots because its Christian conservative owners refused to do work for a gay couple. Michael Lord and Gary Lackey, a gay couple requesting bids for a landscaping job at their new house, received a polite _ and, well, honest _ e-mail from Sabrina Farber, a co-owner of Garden Guy: "I need...