What are some good ways to promote a “networking event” on the internet ?
My answer to What are some good ways to promote a “networking event” on the internet ? on Quora
Add your event to http://lanyrd.com/ and encourage your attendees to mark themselves as attending. That way, anyone who follows them on Twitter and uses Lanyrd will hear about the event, either directly on the site or via email if they’ve signed up for our email alerts.
Putting your event on Plancast is a good idea for the same reason.