This is one of the first things I found myself doing on this new install of OS X Lion:
http://www.elfnet.org/2012/01/09/wget-os-lion-10-7/
Also:
http://thomashunter.name/blog/install-wget-on-os-x-lion/
And I did have to follow the directions found in a comment in Apple’s AppStore (of all places) to get it linked properly: