Other 'Brand Specific' Fountain Pen websites that might be of interest include:
Parker Pen Collector ; Tony Fischier's superb site on all things Parker
Burnhamography : Alan Charlton's detailed history of the Burnham company
Conway Stewart Book of Numbers : I believe this is now maintained by David Wells
Pensbury Manor : Syd Saperstein's Wahl-Eversharp site,
Vintage nibs: An interesting exploration of early Esterbrook Pens
The Neptune Pen : A site run by Mike Bryan detailing the history of Burge, Warren, & Ridgley.
Pen Classics: Interesting site from the New Zealand based Rodger Bamford, with a focus on Japanese pens.
Mabie Todd: A newly launched labour of love that is going to become very useful
The best General Fountain Pen Discussion Boards are;
The Fountain Pen Board: less busy, quality content
The Fountain Pen Network: hectic, covers most areas
Places to find pens for sale:
Noyesville Pens: A new venture by David Silber focusing on affordable US pens
Writetime : For a wide range of English made pens, including a large choice of Conway Stewart's.
Penamie: Brian Toynton's site offering quality pens from around the world,
Distinctive Fountain Pens: New site by Peter Farrell - Pen sales / Parts exchange included
And other pen related links:
Bills Pen Links: Collectors, Dealers, Supplies, can all be found here.
Goodwriters: Active & interesting blog touching on all things related to vintage pens