The cats at Hackerspaces.org are calling for a worldwide hackathon in hackerspaces the weekend of March 20th, 2010. These events are the third weekend of every month, with the inaugural event held last November.

Hackerspaces participating in past events have included Chicago’s PS1, Luxembourg’s Syn2cat, Ireland’s TOG, France’s Tetalab, Saint Louis’s Arch Reactor and a bunch more besides. Most spaces share ustream feeds during the events.

Might be a good opportunity to work on your Robot Build projects? Is your hackerspace participating? Does a monthly event have value? Leave your thoughts in comments.