Bartleby

As I was composing an email to Carly I had to pause to look up the difference between instinctive and instinctual. As it turns out, "These are synonyms, both meaning 'caused by or characterized by instinct,' but instinctive is much more often employed; instinctual is rare, except in Britain." This definition is taken from The Columbia Guide to Standard American English.

I enjoyed that explanation for its clarity and conciseness, so I explored Bartleby.com, the website on which I found it. Bartleby is a website that hosts online copies of books. Their reference section seems pretty useful. Also, the books are posted in what appears to be HTML, meaning they could easily be copied [by some obviously nefarious character] into a format readable by certain digital reading devices; I'm not encouraging it, just noting it.