Nathan Osman

If you’ve written a question or answer on any Stack Exchange site and you would like to share it with your readers, you are no longer limited to pasting a static link. Instead, StackTack will embed a live widget with the contents of the question and some of the top rated answers.

StackTack

StackTack is a JavaScript widget that displays questions from Stack Exchange sites.

edwardw

This plugin is just a very effective yet simple plugin which adds a question to the comment form that blocks most automated spam-bots by making them answer a common sense question. For optimal effectiveness, you should add multiple questions so that the spambots can’t “memorize” the question and answer. The plugin will display questions at random to prevent the aformentioned memorization. Multiple answers can be added per question to account for variances in answers. (e.g. “five”, “Five”, “5”)
Plugin homepage: http://www.compdigitec.com/apps/wpnobot
Please drop a <a href="http://www.compdigitec.com/labs/2011/10/09/wp-no-bot-question-plugin-for-wordpress/" title="WP No-bot Question plugin for WordPress" rel="nofollow ugc">comment</a> if it works for you, if you found any bugs or if you have suggestions/ideas for this plugin – complaints welcome!

WP No-Bot Question

Simple question that blocks most spambots (and paid robots) by making them answer a common sense question

StackTack vs WP No-Bot Question