i think the thing is that it's nice chatting about guitars with people who are interested, think they're cool, know their stuff and use them regularly. a lot of guitar websites are overrun with either bullsh*tting kids pretending they know everything (or that what ever they happen to hav eis the BEST THING EVAH) and ageing gearsnobs and collectors who obsess about ridiculously inaccesible and rare stuff and dismiss anything perecived as budget or lacking prestige.
i think that's why it's often nice to discuss guitars on a bike forum. i have been know to start bicycle threads on music forums too for similar reasons.
yeah this is completely true.
like you say, it works both ways.