The name Huffington is a boy's name of English origin meaning "Uffa's town". Huffington and discussed in our forums with posts like "Choose Their Stage Names".
From the experts:
If blogger-in-chief Arianna's first name can rise through the name popularity charts, why not her surname? Uffa is an Old English personal name (we don't see that one coming back) and the suffix ton usually designates a town or village.