Here's a collection of some useful blog add-ons or extras that can be easily integrated with any website and may help in enhancing your visitors' experience. All these add-ons are completely free and you don't have to be a geek to use them on your site.
FeedBlitz Custom Domains - If someone considers subscribing to the email newsletter of this blog, he is taken to a page like feedblitz.com/f/f.fbz for confirming the mode of subscription - whether he wants to receive updates via email, twitter, Skype, Yahoo Messenger, etc.
When you publish a blog post that has a screenshot or a picture, WordPress will automatically create two image thumbnails in your uploads folder on the web server. Learn how to disable these thumbnails forever.