I asked about this a while ago. http://www.mediawiki.org/wiki/Project:Support_desk/Archives/Miscellaneous/00... :Aboutsite
asking on-wiki doesn't really makes much sense, as I don't read it ;-p
Anyway, we have to ensure, that most of wikis (at least top20 ones) have got ridden of curly braces and any other expensive parser stuff in these messages, as that costs them up to 10 milliseconds per pageview (if anyone writes a bot to do this automatically, I'd gladly run it with my global super duper privileges :)) :
aboutpage aboutsite accesskey-ca-delete accesskey-ca-edit accesskey-ca-history accesskey-ca-move accesskey-ca-nstab-main accesskey-ca-talk accesskey-ca-unprotect accesskey-ca-view accesskey-ca-watch accesskey-n-aboutsite accesskey-n-contact accesskey-n-contents accesskey-n-currentevents accesskey-n-featuredcontent accesskey-n-help accesskey-n-mainpage-description accesskey-n-portal accesskey-n-randompage accesskey-n-recentchanges accesskey-n-sitesupport accesskey-p-logo accesskey-pt-acaibeta accesskey-pt-betafeedback accesskey-pt-logout accesskey-pt-mycontris accesskey-pt-mytalk accesskey-pt-preferences accesskey-pt-userpage accesskey-pt-watchlist accesskey-search accesskey-search-fulltext accesskey-search-go accesskey-t-permalink accesskey-t-print accesskey-t-recentchangeslinked accesskey-t-specialpages accesskey-t-upload accesskey-t-whatlinkshere actions cite_article_link coll-add_page_tooltip coll-create_a_book coll-help_collections_tooltip coll-helppage coll-printable_version_pdf contact-url currentevents-url delete disclaimerpage disclaimers edit helppage history_short interaction jumpto jumptonavigation jumptosearch lastmodifiedat mainpage move mycontris mypreferences mytalk mywatchlist namespaces navigation nstab-main opensearch-desc optin-feedback optin-leave otherlanguages pagetitle pagetitle-view-mainpage permalink personaltools portal-url printableversion privacy privacypage randompage-url recentchanges-url recentchangeslinked-toolbox retrievedfrom search search-mwsuggest-disabled search-mwsuggest-enabled searcharticle searchbutton sidebar site-atom-feed site-rss-feed sitenotice sitesupport-url specialpages tagline talk toolbox tooltip-ca-delete tooltip-ca-edit tooltip-ca-history tooltip-ca-move tooltip-ca-nstab-main tooltip-ca-talk tooltip-ca-unprotect tooltip-ca-view tooltip-ca-watch tooltip-n-aboutsite tooltip-n-contact tooltip-n-contents tooltip-n-currentevents tooltip-n-featuredcontent tooltip-n-help tooltip-n-mainpage-description tooltip-n-portal tooltip-n-randompage tooltip-n-recentchanges tooltip-n-sitesupport tooltip-p-coll-create_a_book tooltip-p-interaction tooltip-p-logo tooltip-p-navigation tooltip-pt-acaibeta tooltip-pt-betafeedback tooltip-pt-logout tooltip-pt-mycontris tooltip-pt-mytalk tooltip-pt-preferences tooltip-pt-userpage tooltip-pt-watchlist tooltip-search tooltip-search-fulltext tooltip-search-go tooltip-t-permalink tooltip-t-print tooltip-t-recentchangeslinked tooltip-t-specialpages tooltip-t-upload tooltip-t-whatlinkshere unprotect unwatch unwatching upload userlogout vector-action-delete vector-action-move vector-action-unprotect vector-namespace-main vector-namespace-talk vector-view-edit vector-view-history vector-view-view views watch watching whatlinkshere wikimedia-copyright
Domas