You can also install the Xmarks  plugin and bookmark, rate, tag or write reviews about sites in you visit.

Features:

• Research sites, see how popular they are and discover similar sites based on the data from hundreds of millions of user bookmarks.
• Browse similar sites, browse related topics, read user reviews and see site ratings.
• Data collected from thousands of Internet users who have installed popular Firefox Xmarks bookmark manager plugin.
• Research and find popular sites in any language or country.
• To write reviews, rate and tag bookmarked sites in your browser, install the Xmarks browser plugin from the site.
• Free, no registration.
• Similar tools:  SimilarSites and SimilarWeb.

Check out Xmarks @ www.xmarks.com

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• SimilarWeb: Discover Similar Web Pages When Browsing Web
• YourVersion: Scans Web for Stuff You Find Interesting
• Wolfram Alpha Google: Adds Wolfram Alpha Search Results Next To Google’s
• Wize: Find Top Recommended Products By Features
• WhichBook: Online Book Suggestion Tool

To add images from your computer:

1. Click “Manage” on the canvas toolbar.
2. Click “Add” button.
3. Browse the image on your computer and then select one.

To add images from the web:

1. Right click on any web image.
2. Select “Add Image to Canvas” option.

You can customize the position, color, tilting of the image and even manage all previously used images in one place.

Features:

• Add image as background to your browser.
• Use images from your computer or web page.
• Customize the position, color and tilting of the images.

Check out CanvasBoom @ www.brandthunder.com/canvas (via Startupmeme)

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• YouTube Auto Buffer: Makes YouTube Better [Greasemonkey]
• Xmarks: Discover Popular Sites Based on Users’ Bookmarks
• Wolfram Alpha Google: Adds Wolfram Alpha Search Results Next To Google’s
• WhyDoWork AdSense Monitor: Monitor Google AdSense Earnings Right In Your Browser
• Unlinker: Quickly See Full Images Behind Links or Thumbnails

Without any installation or complex procedures, PeaceKeeper runs a benchmark process that tests your browser across six different performance measures related to Javascript functionality. During the benchmark process, the browser is assigned a number of points based on factors like Rendering, Computer Graphics, DOM operations and Text parsing. The process analyzes how your browser performs in each of these areas.

To start simply launch the browser you want to test, go to PeaceKeeper and run the test. Once completed run the test again on different browser and then compare results.

Below is the image showing the test results I got for Chrome and Firefox.

Main Features:

• Find out which browser is best for your computer’s hardware configuration.
• Run as many tests as you like.
• Test browser performance in 6 major areas.
• No registration or installation required.

Check out PeaceKeeper @ http://service.futuremark.com/peacekeeper (by Tehseen from RechargeYourMind.com)

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• SimilarWeb: Discover Similar Web Pages When Browsing Web
• Xmarks: Discover Popular Sites Based on Users’ Bookmarks
• WIKAY: See How Any Website Can Access Your Browsing History
• WidExplorer: Navigate Multiple Websites Simultaneously
• WhatIsMyIPAddress: Find Out Your IP Address

You can also customize the way similar content is presented in the sidebar by choosing between different view options like thumbnails, small icons and the list view. Finally, users can vote recommended web pages up or down, filter similar sites by tags, and even suggest a site.

See SimilarWeb demo video:

Features:

• Similar sites finder.
• Currently works with Firefox only (IE coming soon).
• Customize the way similar websites are presented.
• Rate recommended sites and suggest a site.

Check Out SimilarWeb @ www.similarweb.com

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• Xmarks: Discover Popular Sites Based on Users’ Bookmarks
• Springo: Finds Most Useful Sites For Any Purpose
• SimilarSites: Quickly Find Similar Sites
• PeaceKeeper: Test Browser Performances on Your PC
• Ambiently: Discover Related Websites In One Click