It's been some time since I was on this site. The lowercase only use top slopes, while uppercase uses top and bottom slopes. The numbers use pairs of slopes that move in the same direction.
People on the internet often think alike. Which sucks, b/c you don't often get to see creative stuff. A good example is scratch.mit.edu. It's a great website where you make games, animations, art, and other cool stuff. Then you can share these projects with people of all ages around the world. I encourage you to try it! However, Scratch is currently being trashed w/ uncreative humor animations that are all about 3 to 20 seconds, and they mostly use random glitchy humor, which takes no time to create. However, the community @ FS here don't act like such jellyfish; they don't go with the flow like other social sites. To celebrate, I have fontstructed this nice little font here! :) P.S. the "#" gets you a heart and "%" gives a smiley face.