General rule
> As a general rule its a bad idea to ask the address of a competing website on another website.
Sometimes I go to a store for a particular product only to find that they don't stock it, or are temporarily out of stock. Often the salesperson will suggest I try competing stores in the area, even tell me how to get to them.
Now, personally I don't think I'd go to a McDonalds store and ask where the nearest Burger King is. But if someone were to do so, can you blame a person for giving the correct answer - be it a customer, a McDonalds employee or even the head of Burger King who happened to be passing by.
Just my opinion.