Whenever a stock goes up for no APPARENT reason it means there are usually "inside" playors who have reason to believe there is a reason. Sell at your own risk. If it goes down, this may or may not be a buying opportunity. You put your money up and take your chances for example look at Blackberry, J.C. Penny's etc.
Whatever is going on has something to do with this Denver Gold Forum in Colorado that is taking place from September 23-25. I guess that is what the SA Article was talking about in the transcript where IAG presented. Also there is a video of an interview from this conference on GG (tickersymbol) yahoo page from this conference talking about potential mergers in this space.
Someone is accumulating and it is time to buy, buy, buy.