it's burping, it's not like someone is digging in their nose and then eating it.. besides I'm sure you dig in your ass all the time...
I don't mind women accidentally burping but not being disgusting about it. Gals that act like ladies are the best type. However, I find hearing or smelling a gal fart a turn off. Burping is nothing.
i wish i had someone cool to having burping contests with. though im not sure i would record myself and broadcast it on the net. its not a talent or remarkable discovery. but i dont think burping is completely disgusting, i think its disgusting when someone burps and then blows the air in your face, or actually burps in your face.