Talking of which, Arthur Conan Doyle's legendary detective has come out of copyright and promptly found his way onto the Net (at least, 48 out of the 60 short stories have; the rest are still protected in America, although they're out of copyright in Europe). Although it's easier now to read dense text off a computer screen than it used to be, the strain of reading directly off-screen or the hassle of printing out always seems rather laborious, bearing in mind that you can buy Sherlock Holmes collections pretty cheaply. But if free is your thing, then you can't really beat something like this. The archive also has the classic pictures from Strand magazine, where the stories were originally published, as well as links to other Holmes sites.
Copyright laws have never stopped particularly enthusiastic Netheads, although I haven't found any sites blatantly publishing really recent material. One of the biggest archives of online classics is the Organisation for Community Networks' Electronic Bookshelf, which has the full text of dozens of books, raging from Moby Dick to Sense and Sensibility and even The Wizard of Oz. Again, it's difficult to imagine anybody reading the entire novel on their screens, but it can be handy if you just want to look something up.
Legally, though, Shakespeare is comfortably in the clear. One site devotes itself to Richard III, with a hypertext version of the play and a series of pages looking at its historical background. By far the most impressive Shakespeare collection of classic online literature, however, is the Massachusetts Institute of Technology's site, which contains the complete works. Not only can you pull up the text of any play, but you can even do a word search across the complete works. Bet you didn't know that the phrase "Ides of March" appears seven times in Julius Caesar but not once in any other of his plays.
The archive also contains a huge back catalogue of classical Roman and Greek plays and writing, including the Odyssey, Iliad and my favourite classic, Aesop's Fables.
Who could have imagined that one of the best things on the Internet would turn out to have been written thousands of years ago? That's irony for you.
221B Baker Street. The best starting point for Sherlock Holmes fans.
MIT's classic's archive.
MIT's Shakespeare archive, includes a built-in search engine.
Organization for Community Networks online book archive
The Richard III Historical Society's home page