I do a lot of web development and blogging and I tend to use a fair bit of creative commons stock imagery. I've got quite a big collection of images but I'm concerned about storing and organizing these away from my own photos and also keeping the metadata intact for them so I can reference the authors easily. Any tips for this situation? I use Adobe Lightroom.
In my point of view, it's not only important that you yourself know the license, but also that you have a proof of it. One day you may receive a letter from a copyright lawyer claiming that you use these images in an illegal way.
My own practice: For every image / song / video that I download I also save the web page with the license statement as PDF and take care that their filenames are the same. This PDF file is always copied together with the image / song / video, for example into my thematic collection of my own media.
If somebody then questions the license or I don't remember the download source anymore: It's all in the PDF.
This save-as-PDF solution is part of the print dialog box on Mac OSX or Linux. On Windows it can be installed as a print driver, for example with the free doPDF.