Ughhh... really, "poverty porn"? So it's a problem when aid agencies competing for resources towards a mostly sensible goal do it – but when everyone else fakes images, it's not, because... we didn't expect decent behavior anyway? Fantastic.
With aid agencies and donations you're often entirely reliant on their word as to whether your donation has actually made it to the cause they claim to support. If they're going to be using deceptive imagery, what else could they be deceptive about?