Is goabroad.com Safe?

I wrote a review of my experience with an overseas volunteer teaching organization (not found through GoAbroad). The review was negative. When I sent it to GoAbroad, it wasn't posted and I heard nothing from them. A couple of weeks later I followed up and they said they were sorry for ignoring my review. They asked me to verify that I participated in the program. I sent them the proof I was in the program. They still did not post my review. I followed up again a week later and they said they were still verifying things which was ridiculous. I asked them why and was told my review was tricky which must be a new euphemism for negative. So they are not interested in publishing any negative reviews only positive ones making it easier to take advantage of people. They don't seem to want to give potential customers the full story on organizations they list on their site. So I would warn anyone to not use them if you want unbiased, honest information about these various overseas programs that often charge high fees and do very little.