Over the next few months, news of Thompson's expedition spread. He began to receive emails from media companies keen to report the story and many more from both critics and admirers. The sprawling book he'd written, which included his theories about Hollow Earth, began to sell. In December 2002, two months after his radio appearance, he posted a message on his Yahoo Group page describing an inundation of "over 5,600 emails every few days". He said his book, Cosmic Manuscript, had become a bestseller but he was pulling it from sale. "I have requested the book be discontinued even though it's still at the top of the charts in Canada," he wrote.