geeky pics in high-resolution

legal: you can download high-resolutions images for non-commercial use only. in other words, you can use the pictures for making hand-out materials for conferences and meet-ups or decorating your walls at home or office, but you can't use the pictures for making money, i.e. put it on some objects and sell.

t-shirts and posters with listed pictures are available from this store. puchasing something is the best way to support new pictures.