Writing a good presentation is always a challenge that takes time, skill, great content but the biggest challenge of all is making it interesting and there are fantastic resources out there that help not only hold the attention of the audience but also interest them and make them want more - http://www.wordle.net/ provides a perfect resource to create and interesting first page. Have a play with it - I have directed it to look at this blog and it developed the word cloud displayed here - I guess we talk about social media a lot then !