That's a toughie, I'd be careful about what advice you give out, since your readers are probably in some tough spots.

If you don't feel comfortable giving somebody advice, just say that to them. It's much better than trying to make something up that could just make their situation worse.

At best, you can give your honest opinon. As long as you state on your site that these are purely your opinions, there's not much more you can do.

Do only what you feel comfortable doing.