How to talk to someone trying to lose weight

Read the MSN article about things you shouldn't say to someone losing weight and things you should say instead. Luckily, I don't have to deal with most of these things on a regular basis, but as someone who is losing weight, I have to say I agree with them. I've found myself wishing several times that I could do things with friends not revolving around food (we do sometimes, but not nearly enough). I also feel that well-meaning family or friends are kind of insulting with some comments. What are your thoughts about the different points made in this article?