Free PowerPoint Twitter tools

Here is a site where you can download tools to add twitter to your presentations …

Ever wanted to make presentations a more interactive, Web 2.0 experience?
The PowerPoint Twitter Tools prototypes are now available.
Get ahead of the backchannel! Put in feedback slides at regular intervals throughout your presentation, so you’re not the only one who doesn’t know what’s going on!
Tempted, but worried about what people might say? No problem – the tools include the ability to include a moderated feed