On linking, they are different people and competition. It isn't going to happen.
I believe UDisc pays for the mapping service, I could be wrong, but access to maps is not free. We deal with this in my Pizza Deliver business. We have our own Point of Sales system that prints out a map for the delivery drivers. We have changed services 2 times and are currently on our 3rd company. Nokia had the best maps for our tickets, but I believe no longer offer that service.
Yes, WE are what makes DGCR better. Better more in depth reviews. Better information on the courses (assuming someone puts it in) and better organized pictures.
I can tell you this much, Tim does monitor and edits. I have had stuff of mine removed and stuff from others removed.
Recent course I added yesterday UAM Crash Course has pictures on UDisc, HOWEVER they are NOT from that course. After being out there this week, I believe the picture's are actually of the Little Mountain course a few miles away.
But if you are like me, you realize real quick that most of the pictures on UDiscs are not a good indication of the course.