Hi. We have a quiz/poll plug in. More info here: http://vyew.helpserve.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=119
Im not sure if you can display the results in real-time to all your participants though, will need to look into that.
As far as keeping people engaged… this depends on your type of presentation. For a training type session you could have each person break out into their own page to complete a test problem… then as a group go back and review peoples answers. This can be done by turning OFF sync mode, and having pre-made duplicate pages for each person in the room, then telling them how to get to their own page.
This may not work if you have a lot of participants.
What if you made a little game out of the presentation by hiding a small icon in each page, and for each page change,
the first user to point his mouse on that icon wins for that page.... you will be able to see who wins because their mouse (if they are NOT a viewer) will be broadcast on your screen.
If you private message me a link to your presentation and i’ll take a look and think of some other suggestions.