The YouTube Plugin allows you to search YouTube, select a video from the results and add it to your post. You don't need to have a YouTube account. You don't need to edit the b2evolution HTML Validator. You don't even need to go to YouTube.com. It's all done from inside your b2evolution backoffice.
Creates tag links following Blogalaxia's format.
Note: This plugin seems to be broken. It does not retrieve any information from Amazon when a search by Keyword(s) is performed.
This plugin gives you an easy way to add images and links for Amazon.com products to your posts. If you get an Amazon Associates ID and enter it in the plugin settings, then you earn a referral fee if someone clicks your link, then buys the product. This can be a way to add an image to a post as an ad or to maintain a blog in your sidebar that shows what books you're reading.
The Live Hits plugin for b2evolution provides an automatically updating, live view of who is visiting your site. Paste in a Google Maps API Key (http://www.google.com/apis/maps/signup.html) for your domain and new hits will be added to a map.