Now it's a lot easier for your readers to "like" your posts on Posterous.
The new "like" feature is available on all themes and replaces favorites. When someone likes your post, a comment will be added making it easier for everyone to see your latest fan. If you're using a custom theme, you need to make a small change to take advantage of the new "like" feature.
For those if you using custom themes, you will have to make a few adjustments to take advantage of the new liking feature. Learn more about it here.