Hi Im just wondering if most people use Postcode lookup APIs still on BP or dont bother?

Do people feel it helps customers checking out or is more of a hindrance when it doesn't complete addresses correct? Im assume many people these days have auto complete on their browsers anyway which would negate the need for these APIs, or am I missing something? Even with the API completely it incorrectly most people dont amend the incorrect info and the orders come through with the fields mapped incorrectly. So going back to my original question do most people use address lookup APIs or just let the customer fill it in themselves?

Would love to hear what other people use.