None of us really know eachother and donating any money is always a risk, never give more than you can afford and consider donating through a registered and reputable charity, like Anthony Nolan as opposed to a 'just giving' page. Obviously recognised or long term posters may ask and you can use your own discretion, but it's unadvisable (in my opinion) to give to a newly joined member.
Please be cautious, these are desperate times and some people will go to desperate measures to get money out of people.
And perhaps MN could have something in the internet safety/talk guidelines!!