I use browsercam and flickr for reports of website designs.
All designers will know the hell you have to go trough when you design a site, and you see it on another platform and browser. The site will most probably look horrible.
Because I develop on linux, and have no access to a windows machine with internet explorer (thank god, for that!), I use browsercam to generate screendumps from other browsers and platforms. I then import these into my flikr to annotate the picture. This can be used as a full blown report, sinceits public accessible (other in your team, and clients, can see what you think about errors) and its interactive and clear.