"Buy now" from No Starch or O'Reilly or other FLOSS-friendly presses certainly seems safer. Why not ThinkGeek LWN t-shirts to support the site too? Or Flattr buttons, maybe? Easy for me to propose a whole list of improvements for other to implement, as always! I bought the Kerrisk book last night (and another at the same time) and am sorry LWN doesn't get a cent.