Once you’ve taken the leap to participate in a Webinar, be sure to use the Web to promote your upcoming engagement.  Create a plan for updating your social media network about your presentation.  Start by alerting them that you’ve been selected to speak at the event several months out.  As the event draws closer, update your attendees on your preparation for the event and perhaps even regarding your travel plans on the day of the event.  And even if you think that members of your network won’t be interested, they may have interested contacts with whom they can share details of your upcoming presentation.