If you do a great deal of wireframing, then you know the tedium of creating placeholder images for adds, banners, and other fixed items. Adam and I are big fans of Placehold.it for creating placeholder images.
sudo gem install placeholder
Now we can generate the following placeholder image:
with the following Ruby:
= Placeholder.new(:size => 400, :text => "The Changelog", :fg_color => "fff", :bg_color => "333")