I fully support the points made by durhamjen, and welcome the insight offered by Jimbow. It isn't Oxfam that exploited vulnerable people, it is staff hired by Oxfam in good faith who breached their employment conditions.
The staff involved in Haiti were not prosecuted because the Haitian police were not willing to prosecute. Haiti is a destination for sex tourism, with prostitution largely driven by poverty. Anyone who truly cares about the exploitation needs to look for ways to alleviate the poverty.
The Charities Commission is often criticised for not intervening in poorly run charities. Their claims now sound very much like covering their backs. If it mattered to them, why didn't they ask questions in 2011 as to the precise details?
It's true that some charities are little better than fraudulent, and sadly there are a lot of overpaid charity bosses. But I don't believe either of these is true of Oxfam. Its chief executive is paid around £150,00 which is more than I've ever earned, but Oxfam is a very large and complex organisation. I don't think the CEO salary is unreasonable and I'm happy to support Oxfam.
Unlike much of the Haitian aid, Oxfam tries hard to work with local people and to make lasting changes as well as deal with immediate crises.
I fear that some of the outcry comes from people who just want an excuse not to do anything about suffering people who can be conveniently put out of sight.
There have been 100,000 NGOs operating in Haiti and there is no mechanism for passing information to all of them. There is no international equivalent of the sex offenders register.