I had few complaints on my Ajax features installed on my blog. I just went through this cool Plugin called (AJAXed Wordpress) AWP. It forced me to exclude almost 75% of my other plugins . Now I can take care of many Ajaxed features via this plugin without pain. Thanks to AWP project members.
From project page :
AJAXed Wordpress (AWP), formerly know as INAP, is an extremely powerful AJAX plugin that harnesses the power of AJAX and Wordpress to improve the user experience, the administration capabilities and the design potential of any Wordpress based blog.
AWP’s basic features include inline paginated posts, inline comments, threaded comments, the ability to submit comments with AJAX, pagination of your homepage, live comment preview and much more, but it does not, however, force you to use any feature, and it also allows all aspects of the plugin to be easily customized through a single Administration panel.
AWP is built to integrate with other plugins and features an advanced module system—based off of WordPress’ plugin system—that allows it to be modified with the addition of third-party extensions. It also has special features that will ensure compatibility with many other plugins.
AWP is also search engine and user friendly. None of the AJAX or Javascript used in the base modules will interfere with SEO or Accessibility.