There isn't an option to select the "participant" role from the roles allowed to upload attachments... this is a problem for me because the default role of my folks on the main blog is "participant". It is a multisite network and folks don't get assigned any role other than participant (on the main blog) unless they join another blog -- but I still want their private messaging capabilities to include uploads, even if they haven't joined a blog yet. Is there a work-around for this? And/or any prospects for the developer to add "participant" as an option in the settings to receive upload permissions? Thanks!