Here are some links to guitar sites I visit often.
There are a number of guitar forums I would encourage everyone to visit and contribute to these sites.
The Stratocaster forum is a very busy forum with sections for lot's of other guitars and guitar related matters
The Yamaha Guitar Forum
The Telecaster Forum is worth a visit and has other sections including other guitar owner's clubs.
The Squier Strat Forum is a bit niche but has some good stuff and some good people
The Burns Guitar Forum is a here lots of knowledge
Burns Guitar Forum
For information on all the Super Axe models that I don't cover.
A brilliant site with a fantastic amount of information on Yamaha SG models
Yamaha SG Geek Chris is back as part of the Yamaha forum.
A specialist site on Yamaha Super Flighters
Yamaha Super Flighter
A Dutch site for vintage Yamahas
Vintage Yamaha Guitars
Elite Vintage Guitars features Jay's collection of Fenders, Gibsons, Yamahas and many others he has a facebook page too.
Elite Vintage Guitars
Still kickin music is Wade's site it features guitars for sale as well as a blog and a very useful serial number section
Wade's home page
Wade's serial number resource
A UK Specialist Guitar Auction House
A Burns Guitar Site No longer updated but great information
My Burns Guitar Site Developing all the time. Development currently paused.
A Great Guide to Westone Guitars
Another Great Guide to Westone Guitars
Westone Guitar Info
A Site devoted to Matsumoku Guitars
A guitar review site with some great information covers lots of Yamahas and others such as Gibson, Ibanez and Washburn
Francks Japanese Vintage Guitar Site has some great information and is well worth a visit
Vintage Japan Guitars
A massive amount of information on Squier Guitars here