I have been using Justdial.com for many years. It is a decent service especially when you are away from the internet - you can use the fancy phone number and get information. However, if you were to use the website I would prefer Google Local Search instead. For instance: Forex, Chennai would give you instant result of Forex Companies with Location (Map) and phone numbers. Really makes a world of a difference. I like the content organization and map support. I think an automated algorithm fetches information so you need to be little more accurate on what you search for.