I have a friend who does exactly that, although she doesn't ask for advice. I take the line that unless she asks for advice, I'm not going to give it because I hate it when people say "oh, are you trying to lose weight, I just heard the latest diet X is really good".
If she ever does ask me, "why can't I lose weight" I'll ask her "do you want me to answer truthfully, or do you want me to be a sympathetic ear?" I'm a bit of a blunt personality, but I think sometimes people THINK they want to lose weight, when they actually aren't ready to. I know I was like that for ages. Once they get to that lightbulb point, all that information will actually make sense.
So for me, I try to get out of them whether they just want to whinge, in which case, go ahead, make my day, aren't you such a poor old soul. But If they are actually asking for help I give it, they can take it and if not and they keep coming back with the same problem having ignored my advice, I say "well I've told you what I thought about that already, maybe you should ask someone elese for advice"
sorry for being long winded
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"