Corner Ad is a WordPress plugin for minimally invasive advertising that gets displayed on top corners of your webpages. The position is typically under-utilized by developers and attracts your visitors using a cool visual effect and imitating a page flip.
You can easily extend default WordPress widgets and add a few more widgets with more powerful features and customization options. GD Simple Widgets is a package of powerful and user-friendly widgets which expands default widgets features with few more must-have widgets specially for displaying posts, authors and comments.
WordPress Plugin Repository has a new AdSense plugin called Best Adsense. The plugin is different from all other plugins out there , it provides you with quick and much easy to use features. The plugin simply requires Adsense Publisher ID and Channel (Number) and you can play with all sizes of ads without having to create-copy-paste new ad block code from your Google AdSense account.
Generally WordPress website owners use CAPTCHA plugins for protecting their site from Spam Bots. This tutorial explains you working of a free WordPress plugin you can use for protecting your WordPress installation from Spam Bots without installing any type of captcha plugin. Keypic.Com is an online service that provides you with free plugins now only for WordPress but for other Opensource blogging platforms like Drupal and next month (as scheduled) they would be launching plugins for Joomla, php. More plugins would be available in the near future for MediaWiki, Typo3, vBulletin. For more information on plugins visit here.
WordPress Image Widget plugin displays an image in your site’s widget areas. Its ability to add caption and link to image allows you to use this plugin for multiple cases like you may use it for displaying banner ads, you may use it as an About Me widget etc.