Recently, Howard Mandel over at Jazz Beyond Jazz started the idea of a Twitter hashtag, #jazzlives - use it to report whenever you hear live jazz, either in person or on the radio, as long as it's live. Great idea, and a fascinating way to see what's happening in terms of live gigs around the world.
But please, only use it if you're at / have been to / are listening to live jazz - please don't use it for promotions and other randoms. There's a lot of that going on already, and it spoils the intention.
[If you're wondering, I'm euphbass on Twitter too.]