Audience members will be able to follow along what is occurring on each node as the talks progress, or the speaker may provide different information on different screen, etc. This year the 802.11b network will extend to the speaking areas, so if you need to include net access to your presentation, plan on it. Speakers will be subscribed to a mailing list that includes the other conference speakers in an attempt to allow a level of collaboration between presentations. This year we are going to increase the quality of the talks by screening people and topics better. I realize you guys are speaking for basically free, but some talks are better than others.
Some people put in a bit more effort than others.
I want to reward the people who do the work by making sure there is room for them. After an outline is recieved speakers will be contacted if there are any questions about their presentations. If your talk is accepted you can continue to modify and evolve it up until the last minute, but don't deviate from your accepted outline. Talks that are more technical or reveal new vulnerabilities are of more interest than a review of firewall technologies will be given more consideration, as will original content or research that have been created for DEF CON and has not been seen before. Heck, most people find it is a great way to get a job, or change a job.