Change the name!
I love your site/service! And I donate whenever I can! And I recommend it to everyone! But living in a prudish country (USA), the name can be a turn off in some circles. For example, I've told a group of people about it, then had to pull one person aside to tell them the URL quietly. (Of course, maybe I'm the prude.) And most people don't know what 'raster' means. Anyway, this change would be easier than all the tough software fixes the other suggestions require, and I guarantee it will increase usage. You could have a contest! My entry would be 'blowitup.net' -- o wait, that would get the wrong attention too. Maybe just f*** the USA, huh?