Different airlines have different luggage policies. Frequent travelers would know the inconvenience it can cause when one has got extra luggage and the airline either refuses to accommodate it or charges exorbitant fees for carrying it.
LuggageLimits is a useful website that can help you avoid such situations. Select the airline, departure and arrival airports, and get the corresponding luggage weight limit.

You also get bonus information which includes route embargo information, individual luggage size and weight limit, number of free bags permitted, general information about the airline and any online discount if available. The information is available for over 90 airlines around the world.
Features:
- Check airline luggage limits before you travel.
- Includes over 90 airlines in the list.
- No need to register. Get started immediately.
- Also get info like luggage size limit, route embargo info, online discounts and more.
- Similar tools: FlightCaster, AboutAirportParking and SleepingInAirports.
Check out LuggageLimits @ www.luggagelimits.com (via Lifehacker, by Abhijeet from Jeet Blog)