Daddydesign

<ul>
<li>Responsive Pop Up Lightbox Ads & Banners</li>
<li>URL link field</li>
<li>Lightbox width</li>
<li>Background color</li>
<li>Add to Multiple Page/Post IDs</li>
<li>More!</li>
</ul>
<h4>More Info and Demo’s</h4>
<ul>
<li><a href="http://www.daddydesign.com/wordpress/responsive-lightbox-wordpress-plugin" title="responsive ligthbox ad" rel="nofollow ugc">Daddy Design</a></li>
<li><a href="http://radiosouthbeach.com/" title="radio bar" rel="nofollow ugc">Radio Bar</a></li>
<li><a href="http://redgingersouthbeach.com" title="red ginger" rel="nofollow ugc">Red Ginger</a></li>
<li><a href="http://www.bodegasouthbeach.com/" title="bodega" rel="nofollow ugc">Bodega</a><br />
———</li>
</ul>


WP Responsive Lightbox

Love it

Plugin for adding a customizable, responsive lightbox pop-up AD, banner or call of action on home page or any page of your liking.

Adam Nowak

<p>This plugin adds a customizable security question to the sign up form.  You can choose your own question and answers.  Multiple answers are possible, you can have a question like: Do you like cats or dogs and have both as acceptable answers.  The goal is to fool the spam bots.  Change questions as often as you need, it’s easy. The plugin can’t stop spam altogether, but every little bit helps.</p>


Buddypress Humanity

This plugin adds a security question to the Buddypress registration page.

WP Responsive Lightbox vs Buddypress Humanity