Here is a list of sites/clubs and shops I support.  That doesn't mean you have to...

For the Mod

For the Rocker

Shops

Piston Ported-Garage inspired vintage scooter apparel.
Motorsport Scooters - Good Vespa Parts-no crap.
JET200 Performance - Boy Racer Bits for Lammies.
Scooter Originali - Always seems to have what I need.
Scooterworks - Cheap Vespa Parts
Casa Lambretta - The best Lambretta parts for resto

Shops

Lowbrow Customs - Cool Apparel/parts and fellas
RedTail Leather - Seats that will last longer than you
Atom Bomb Custom Motorcycles - Badass british bikes
Four Aces Cycle Supply - Get skooled by the man
Glass from the Past - top of the line Cafe fibreglass
Grand Prix Glassworks - top dirt track fibreglass
British Cycle Supply - Lots' o British Parts from Canada

Forums

LCUSA - The only Club I belong to; Lambrettas only
The International Scooter BBS - Get flogged; for fun.
Paisans - Vintage Lambretta/Vespa

Forums

The Jockey Journal - All things cool
Brit Bike - Only British
The Ton Up Club - Badass Cafe Ass Kicking

Misc

scoot.net - Classic Scooter Epicenter
Scooter Help - Tech and Info Mecca
2strokebuzz - The only news I read
Genuine Scooters - Great modern scooters

Misc

Triumph - Still Making Cool Bikes Unlike Most Brands
Royal Enfield - I'm drawn to these like a bug to light.
Norton - Back in action