Since this blog has been a bit quiet lately, here's another Hot Font. This one is called Muli.
Muli is a display font, yet works well on many different things. Muli comes as regular (Normal 400) and light (Book 300). It's clear, simple and lightweight sans-serif. Created by Vernon Adams as many other Hot Fonts, Muli is published under SIL Open Font License (OFL) and it's of course free.
Muli on Font Squirrel and Google Web Fonts.