If you dont want to help Dave, dont complain. You are quite happy helping users of other systems but you will not aid you fellow members on this forum.
On the contrary, I have provided AirNav with a technique which will allow many, many routes from many, many airports to be derived, not just one, which would be of considerably greater assistance to members. It's hardly my fault that AirNav have made such a miserable hash of implementing it, and I'm certainly entitled to complain about that.
Yes, I could spoon-feed AirNav with all the Heathrow routes, but that would both remove any incentive for them to fix their algorithm, and also remove one of the only useful benchmarks that we have to allow us to assess the overall quality of the routes database.
And, before you accuse me of being unhelpful to other members, correct me if I'm wrong but wasn't it AirNav who declined my offer of access to flightroutelookup.com because they insisted on looking a gift horse in the mouth ?