You can perform although there are featured readers too. The organisers state the following - with admirable honesty -
"Please don’t perform anything with a setup that takes much more time than the time it takes for you to walk onstage. Honestly, plugging things in endlessly is boring."
Anyway this event is in San Francisco from 20:00 until 23:00 in PST and it is tonight.
Go to Viracocha 998 Valencia Street and enjoy. (It is worth going to Viracocha anyway.)
More details here http://www.facebook.com/events/164635857012092/
And by the way thank you to Thierry Strub for the use of this beautiful picture of the Pic de Bugarach.