GlassDoor – Compare Your Salary Against Others

GlassDoor lets you anonymously share your salary figure with others and in return, get full access to salaries of others. Simply post an anonymous salary of your own and in few minutes you will have access to salary figures in over 23,000 companies shared by real employees. This is one of the sites that you should definitely check before going for your next job interview.

TicketsFTW / TicketPredator – Comparing Ticket Prices For Events

TicketsFTW and TicketPredator brings the best deals on sports, concert, and theater tickets and even sold-out shows. Simply search for the event you want to attend and see the where you can buy it at the lowest fare.

Rentometer – Compare Rent Rates

On Rentometer, you can find out whether the amount you’re currently paying for your rent is a rip-off or a bargain. Rentomoeter compares the amount you pay to an average rate for similar apartments in the neighborhood. There is also a map view of nearby apartments including their rates.

Compare Dimensions: Sizeasy / DisplayWars / TV Calculator

Sizeasy, DisplayWars and TV Calculator are 3 excellent sites that can help you a great deal when you are trying to visualize the dimensions for things like small electronic gadgets, mobile phone and TV screens.
I have used these tools countless times and highly recommend them to everyone. Sizeasy works great for smaller items like mobile phones. The other two focuses on TV screens and monitors.