This goes nicely with the change of logo. Change the footer text to anything you like:
function remove_footer_admin () {
echo 'Siobhan is Awesome. Thank you <a href="http://wordpress.org">WordPress</a> for giving me this filter.';}
add_filter('admin_footer_text', 'remove_footer_admin');
Happy
0 %
Sad
0 %
Excited
0 %
Sleepy
0 %
Angry
0 %
Surprise
0 %