oDesk knows how painful can be to write up once again a job post description, even more if it’s for a small job. That’s why they give you the option to reuse some of your previous job posts.
Buffer provides a WordPress plugin (digg digg) to make it super-easy the way of sharing content of your blog. Even if it’s not their core business the development of WP plugins, they know their vast majority of their users might be using WP as platform to blog, so why not to make the path easier
Once you add the KimonoLabs add-on to your browser, it shows a figure with the number of current APIs created by other users in the page you are currently browsing.