It was very easy using this app! I didn't even know how many times you could put your location in post code (which there are soo man).
The only thing i disliked about our experience of signing up with 'Postble' as they call themselves now - we had some problems uploading images which took ages but once that happened everything went really well!! Great product & great customer service from their team too. Have no complaints at all when dealing through these guys/galas :) They've helped us out tremendously during events such has weddings etc where guests couldn't find each other easily :D We would definitely ask again if needed by clients who want more accurate data than what traditional services provide like Address Books online /etc.