I've just dropped the ppc and sparc keywords on dev-ruby/mechanize-0.9.0. This version of mechanize depends on a new package, dev-ruby/nokogiri, instead of dev-ruby/hpricot. Please test and and add back your keyword for dev-ruby/nokogiri-1.1.0 and dev-ruby/mechanize-0.9.0.
~sparc done
keyworded ~arch for ppc, closing