I'm a big email guy. Not that I'm big and I like email (though that might be the case) but I really like having a paper trail for work and, because of the type of learner I am, I find I remember things better when I send an email as opposed to making a phone call. It doesn't help that my note taking skills stink and my handwriting is illegible.
Have you ever thought about what kind of learner you are? Or what type your meeting attendees are? It can greatly impact how your meetings are perceived.
For fun, you can take an online test and determine what kind of learner you are. Of the choices - aural, visual, kinesthetic - I rank highest on kinesthetic, but like many people I'm a combination. I'm a visual-kinesthetic learner. Another category some people include is the Reader/Writer category, but I like to think of that as visual, as something I see (and it's easier to remember three categories!)
You may be an aural or auditory leaner if you like or benefit from traditional teaching techniques, such as lectures. Your mind may find interest in the inflection or tone of the voice and prefer to be read instructions aloud.
For those who say, "show me what you mean and I'll get it," you might be a visual learner. Diagrams, charts, films and things written down seem to make the most sense to you.
I'm big on the Learn-While-Doing method, often called tactile or kinesthetic learning. It's the actual experience of doing something that helps us learn and retain information better. For example, I'd rather drive than be driven. I'll learn the route much better that way.
It's easier to engage the audiences at your meetings if you know how they learn, which is why having a variety of different speakers and sessions might prove most beneficial to your attendees. It may not hurt to indicate what type of learner each session appeals to.