The first was for a shot of some meerkats at Oakland Zoo, to be used in an educational program at the Boston Museum of Science. The second was the shot of California’s Capitol building shown to the right, being used on a web page for a student lobbying day event. Thank you both for asking first.
In general, I have no problem with people using my photos for non-commercial reasons as long as they ask first. I am less impressed by the increasing number of people using my photos on their pages at myspace, xanga, livejournal and other similar sites without asking or even adding a credit. Beyond my limit though is usage by sites like Fark.com on pages that require a paid subscription; that is unauthorised commercial usage.