Discover which keywords your site visitors are googling to reach your site. Build automatically a tag cloud based on realtime usage data, not on the tags that you THINK are appropriate. Fully customize the tag cloud links and keywords. Ban inapproriate keywords with one click. INSTRUCTIONS: Just activate the plugin, place one of the three available Keyword widgets in your sidebar, and wait some visitors come from a search engine to see the first keywords.
A few notes
<ul>
<li>Tag Cloud is updated each time a page is being visited from somebody who found it on a search engine
<ul>
<li>Same IP can’t fool too much – IPs are logged and considered by the algorythm</li>
<li>Configurable pagerank shaping: follow/nofollow links</li>
<li>A good keyword tag cloud will be the result of a semi-automatic refining process</li>
<li>The keywords you select stay forever and pass PR</li>
<li>less important ones go away eventually!</li>
</ul>
</li>
</ul>

Keywords Cloud for WordPress

A WordPress widget able to store and display in a tag cloud the keywords that your site visitors are using to reach your site's pages.

Flector

“HTML5 Cumulus” is a modern (HTML5 canvas tag based) version of the classic old “WP-Cumulus” plugin.
The plugin’s widget gives you a nice-looking 3D tag cloud in the sidebar that will work in all modern browsers, including mobile ones.
<a href="https://html5-cumulus.ru" rel="nofollow ugc">DEMO</a>
If you liked my plugin, please rate it.
The plugin uses <a href="http://www.goat1000.com/tagcanvas.php" rel="nofollow ugc">TagCanvas</a> jQuery plugin by Graham Breach.

HTML5 Cumulus

сам себя не похвалишь :)

cool :)

A modern (HTML5) version of the classic “WP-Cumulus” plugin.

Keywords Cloud for WordPress vs HTML5 Cumulus