Wordpress is the software I use for the blog here. This is a plugin I wrote to extend the functionality.
Tag clouds and Archives are useful for visitors, but also for search engines to find and index what topics your blog relates to. "Post Tags and Archives" allows you to easily add Tag Clouds or Archives to posts and pages via shortcodes. Before, you could only put it in the sidebar or widgets. But that hurts your search ranking for relevant terms, and crowds the sidebar. So one either had to truncate the cloud and archive - or get rid of them (or use some more complicated trickery.
Now you can just drop them in your posts and change the look easily via the options.
(For the mad tweakers, you can also add the php code '
<?php pta_posttags(); ?>` ' or '
'<?php pta_postarchives(); ?>' to your templates to show the cloud/archive. I guess it's basically the same as the default WordPress feature, just with easier options)
Please use the wordpress support forum for issues and requests.