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Charles developed The Guide to Grammar and Writing in 1996, originally to help his students write reports and research papers. In addition, he wanted to create a place where students could look up grammatical issues for themselves. The Guide to Grammar and Writing rapidly took on a life of its own, mushrooming into a wildly popular site, with upwards of 30,000 hits per day from all over the world. It was a labor of love for Charles and, when he retired in 2005, he continued working on it.
Charles thought it was essential that the site remain a free service, but laughed at the implications if it were otherwise.
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