What happens to old digital humanities projects? Most vanish without a trace. Some get archived like the work of John Burrows and others at the Centre For Literary And Linguistic Computing (CLLC). Dr. Alexis Antonia kept an archive of CLLC materials which is now available from the Centre For 21st Century Humanities.
An article about authorship attribution led me to this nice site on Common Errors in English Usage. The site is for a book with that title, but the author Paul Brians has organized all the errors into a hypertext here. For example, here is the entry on why you shouldn’t use enjoy to.
What does this have to do with authorship attribution? In a paper on Authorship Identification on the Large Scale the authors try using common errors as feature to discriminate potential authors.