As part of a Wikipedia usability research study in early 2009, we at boltpeters.com spoke to fifteen Wikipedia users who had never edited a Wikipedia entry before, and watched them as they tried editing for the first time. We spoke to ten of the users in person at a lab facility, and the other five remotely over the phone, using a screensharing program to observe their screen. We recruited the users with a combination of the online recruiting tool Ethnio, and the awesome folks at Davis Research.
This is a highlight video of some of the users.
Davis Research: davisresearch.com