Reuven Karasik

This plugin alows you to display a message to all your visitors insode a fancy lightbox. 
features:
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Easy interface and simple settings pages
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All features support any type of client-side code: HTML, Javascript, embed of video or enything you want
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Display your message to all visitors in a pop-up lightbox. Automaticly put there a like button, and you will get lots of likes every week
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Your Lightbox

Display lightbox with your message or like button to all visitors

This plugin allows you to easily open and close your website and display a custom message or HTML page when closed.
<ul>
<li>Simple yes/no toggle to open/close your website.</li>
<li>Display your own closed.php within your theme.</li>
<li>Display your own custom HTML markup, pasted directly into the plugin settings.</li>
<li>Display a basic message informing your visitors that your website is closed.</li>
<li>Set paths which bypass the closed page entirely.</li>
<li>Set a bypass GET parameter which will allow anyone you give the URL to to browse the website as normal while the site is closed.</li>
<li>Automatically clears any caches for W3 Total Cache and WP Super Cache.</li>
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Website Open/Closed Toggle

This plugin allows you to easily open and close your website and display a custom message or HTML page when closed.

Your Lightbox vs Website Open/Closed Toggle