There are many ways that you can share your presentations or media. In addition to Netfiles (offered at UIUC), there are many media hosting sites. Most of these require you to create a free account. They will then provide a limited amount of storage for your media. Most offer a premium account for minimal $.
These are also excellent sites to visit to find presentations or learning objects on any number of topics. Some allow you to grab the info and modify to suit your needs.
Following is a handout with selected sites, as well as a powerpoint presentation.
Media Sharing Handout Here
Narrated Power Point Presentation Here