Looks great! About the logo, I just used fonts, not proper graphics/SVG etc. I've attached the file I worked on, sorry it's in Mac OS TextEdit format, and a copy exported to PDF, I'm not sure if the PDF version preserves fonts/formats or just contains a graphic representation, so I hope you can read it. Basically the font I used for the logo text is Ubuntu Mono with "hacker" in bold and "space" normal (notice I started the design using courier, and tried a couple of others before settling on Ubuntu Mono), and the circles in the logo are just a character from the "Heiti TC" font (which is perhaps mac specific, I've never heard of it before - I just wanted circles). It's a bit of a hack, and maybe a real designer with the right tools could put together a better and more portable version? Jack.