FlipTop is a great tool that notifies you whenever your favorite website or blog gets updated. All you need to do is drag the subscribe button to your browser toolbar and then whenever you are on a webpage you need to track, click the subscribe button.

You can subscribe using RSS feeds or choose to receive the updated content in your email inbox. What makes FlipTop great is the ability to filter these updates by keywords. For example, while subscribing to eBay if you enter the keyword PS3, you’ll only be notified if a new listing has the PS3 keyword.

When receiving updates via email, you can choose the frequency of updates. With RSS, you can select the reader of your choice.

Features:

• Get notified when content on a website is updated.
• Receive updates via email or RSS.
• Choose between RSS and ATOM feeds.
• Select the desired frequency of updates.
• Works on a single click from your browser toolbar.
• No registration required.

Visit FlipTop @ FlipTop.com [Via CNET]