Archiving annual festival site

Personally. I would archive the 2010/etc sites to Pure HTML. This plugin would do the job http://wordpress.org/extend/plugins/static-html-output-plugin/ This WordPress codex post describes another method. With using WordPress in its own Sub Directory and archiving sites: http://codex.wordpress.org/Giving_WordPress_Its_Own_Directory#Pointing_your_home_site.27s_URL_to_a_subdirectory

Is there any central control/access panel for several WordPress sites?

For remote management of many installations of WordPress, I know of two options, one paid, one free. ManageWP ManageWP is a WordPress management console that gives users full power and complete control in managing virtually any number of WordPress sites in the easiest way possible. InfiniteWP Manage multiple WordPress installations from a single dashboard using … Read more