Great tool! I just sent it to my client yesterday (after finding it here) so she could send me image samples from various websites she's interested in working into a marketing plan.
I also envision using this to help prepare her new press kit, as you suggested, but hers will be in Powerpoint so will be very easy to add any kind of image to.
I especially like the fact that I can take a screenshot of any part of the screen, any size - it's incredibly versatile in that way and has some interesting potential for graphics projects.