Contact information
It should be obvious from the address of this home page, but here it goes anyway: terceiro at softwarelivre dot org .
GnuPG public key
Key ID 0F9CB28F, probably already on your preferred public keyserver. (e.g. pgp.mit.edu or the subkeys.pgp.net roundrobin servers).
You can also download it here: 
terceiro.asc (2.06 KiB)