As a general rule, b2evolution generates thumbnails of all the images that you attach to a post ( more information about this subject can be found in this page: Caching and Cache Levels ), and the Watermark Plugin lets you add watermarks to those thumbnails. This plugin has per-collection settings, which means that its settings may be defined globally and also individually for each collection. The default global settings form, including its default values, is shown in the image below and listed as following:
Media player for these file formats: flv, swf, m4v, f4v, mov, mp4.
A new player will be included in the post for each video that you have attached to it.
This plugin adds an autosave functionality to b2evolution: The post you're editing or creating gets autosaved every X seconds (default is 5 minutes), so your post won't be lost completely if your browser or operating system crashes. The plugin also adds a "Save and review" button to the post form. Various features of the plugin can be changed and disabled on the plugin's settings page.
Replace a standard search widget with Advance Search and you will be able to filter results by many parameters ( blog, category, post author ) plus you can customize almost everything.
This Renderer plugin allows several formating options for your text. This is especially useful on blogs where HTML is not allowed.