Like many of you I'm sure, I consider the creation of user personas to be a crucial part of the UCD process, particularly when starting a new project.
While we all have our own techniques and styles for writing personas, I've often wondered what the best methods are for sourcing appropriate photographs to attach to each of these profiles? While it's an insignificant part of the creation process itself, I often find that a good photo is key to making the persona believable and convincing.
When working with fashion brands this generally isn't too much of a problem; I'll head to Getty images or i-stock photo etc... But when working with companies that actually interact with 'everyday people', what do you find are the best methods of sourcing royalty-free photographs of people who don't look like they came straight out of a soap commercial?
Also to extend this question, what other techniques do you employ in order to make your user personas more believable?