Hola Gaby,
The role of volunteers this year is to help at the different spaces (there are 10 Spaces in Mozfest this year, and you can see each description here: Mozfest Spaces).
We will be selecting volunteers based on Roles that Spaces has requested, and that’s why we ask for Skills in the form. If you are a localizer, we will be assigning you to the Localization space, if you are a Writer, we will be assigning you to the Journalism space, and so on.
There are only 20 spots available, so we will try to select the most adequate person for each space. This is not a sponsoring to assist only, or go as an attendee to a Space, this is for participate at the Space under a certain role. So basically you will be requesting to help in specific tasks at one or two spaces.
Hope this clarify a little. If you need more information, don’t hesitate to ask.
Regards,