crowdsourcing

I've been inspired by another question: Best Practice for Using Java System Properties I'm currently looking for a complete list of Java system properties and possible values. I'm working on a simple class to simplify use of them (If you're interested, get the source and background info (my blog) ). With this class, I try to provide the following: simple and consistent access to Java system properties (no String constants) full documentation of available properties and their possible values – within my IDE (i.e. auto-completion, inline Javadoc) fix inconsistencies in returned values and/or

I'd like to rank a collection of landscape images by making a game whereby site visitors can rate them, in order to find out which images people find the most appealing. What would be a good method of doing that? Hot-or-Not style ? I.e. show a single image, ask the user to rank it from 1-10. As I see it, this allows me to average the scores, and I would just need to ensure that I get an even distribution of votes across all the images. Fairly simple to implement. Pick A-or-B ? I.e. show two images, ask user to pick the better one. This is appealing as there is no numerical ranking, it's just a