How is it advertising? it is just someone that has been there, tried their burgers and enjoyed them so much that he/she feels the need to shout it from the rooftops.
I've just been reading the post where someone was asking about where to buy Indian food and saw quite a few replies with recommendations , directions and shop names to try and wouldn't call that advertising, would you?
Maybe go and try the place yourself, you never know you might actually find that you enjoy those burgers as much as the original poster did.Â
Bless