What are the evidences that 3 sangams were held? I had assumed it to be true, but was shocked to see it being described as hoax on wikipedia : http://en.wikipedia.org/wiki/Sangam. I edited it to reflect both sides of the argument (based on the citation already in the article), but looks like there is a mob that undoes any edit in this direction.
If anyone has literary/incriptional evidence for sangams (or, to be fair, any evidence to prove that they never did happen), it would be great.