I will be the first one to say that I am not a fan of Roula's radio work... AT ALL...
However, I don't have a problem with her doing this. For one, she isn't asking for limitless contributions to some ambiguous organization to help with generic "relief efforts" in Greece. She is looking for a specific amount for a specific item that would help in a defined manner. I think she is going about it the right way.
Secondly, she is Greek and is very proud of her heritage. I am from Louisiana and, while not from the New Orleans area, did sympathize and contribute with everything going on there. I don't really question her motives here. I think her motives are fairly benign and sincere here.
Oh and I am pretty sure I got the W***E reference...