Hello all UK Geocachers!

I am aware that the "biggest" Geocache website is geocaching.com.

I was wondering if this was pretty much exclusively the only site used by cachers around here? Or do some people log their caches on more than one site?

The reason I ask is that I am investigating the possibility of creating an "open" or "free" equivalent of Geocaching.com -- one without advertising, without extra paid-for benefits, and a completely open developer's API. This would allow anybody to create their own free (or paid-for if they want) Geocaching apps. These apps would be able to make full use of live data (i.e. it would be far more robust and seamless than using pocket queries), and could run on mobile devices, desktop, or even interface to sites like Flickr and Twitter.

Would anybody be interested in making use of such a site? Or is everybody most likely to stick with Geocaching.com?

How do people feel about one company (Groundspeak) controlling, and making money out of, their geocaching data (and all their effort in hiding and finding caches)?

Any constructive feedback is welcomed!

Many thanks,
funkybro