These people can attend (just sign up, we can fight^Wdistribute later):
(the % is meant to kind of indicate how much time you can be there, and which days are best)
The entrance to the exposition is free, and it is possible to register online (on http://www.topsoft.ch) to avoid queing up at the entrance. The opening hours are 9-18 on Wednesday and 9-17 on Thursday.
Ticket reservation over this link which is available now on openexpo.ch http://openexpo.org/index.php?id=52