You might have noticed on Twitter that it provides you AJAX login at the time your are browsing other profile pages. For example: when you visit any Twitter profile, you can login to your account directly from there without leaving the current page. If you have a WordPress blog then you can easily add Twitter type login widget in WordPress site’s top right corner so that users can easily login or register in your site without leaving the page.
Now you can adds a watermark signature or image to all of your uploaded images in your WordPress site. Signature Watermark plugin uses PNG images with transparency for watermarking your site’s images.