I just found an awesome plugin for iPhoto: Keyword Assistant makes using keywords as easy as del.icio.us, so you're more likely to enter useful metadata about your most valuable digital resources - the stuff that comes from your camera.
I found it odd when I spent more time tagging web pages that I might look at possibly once or twice in the future, than on the photos I take of my family that I hope will remain valuable forever. It sounds odd, but Keyword Assistant actually made me go in and add keywords to the hundreds of photos I'd taken in the last few months. These were photos that I'd been neglectful in tagging, so there was a high risk that I'd lose some context over the years.
![Ethnoclassification in action!](http://www.darcynorman.net/images/iphoto_keyword_assistant.jpg)