Webinars are great vehicles for establishing yourself as an expert in your field. But that doesn’t mean that you have to do all of the talking. Sharing the floor with a guest speaker can add to your credibility and give your audience the benefit of a different perspective.

Some marketers are intimidated at the prospect of finding guest speakers. Maybe they are afraid that they will have to pay huge fees, or perhaps they worry about being rejected. But many people are willing to speak at webinars at little or no cost since they will gain exposure by doing so. Here are some tips for finding guest speakers for your next webinar.

* Use your social networks. One of the best ways to make connections these days is through social networks such as Facebook and Twitter. Why not use them to put the word out that you’re looking for a guest speaker for your webinar? One of your followers might be interested, or maybe your followers will pass the word along to help you find someone. LinkedIn is another good source for potential presenters since it is focused on business networking.

* Send an email. If you have a particular speaker in mind, go ahead and shoot him or her an email. Those you’ve done business with previously are often happy to oblige. And even if it’s someone with whom you’ve never made contact before, there’s no harm in trying. Just introduce yourself, explain why you think they would make a good guest speaker, and ask if they would be interested. You might be surprised.

* Ask readers of your blog or newsletter for help. Ask them who they would like to see as a guest speaker for your webinar, or if they would be interested in doing it themselves. Let them know exactly what you’re looking for and what kind of expertise is needed, and you should get some helpful responses.

* Offer something in return. While many speakers are willing to help you out in exchange for added exposure, it never hurts to offer something in return. If you’re charging for admission to your webinar, it’s only fair to offer guest speakers a flat fee or a percentage of profits. For free webinars, you could offer to return the favor at their next webinar or write a guest post for their blog.

A great guest speaker for your webinar could be just an email or tweet away. Don’t be afraid to put the word out and see what happens!