Fantastic. It's the future. Hope EH, NT et al embrace it ASAP - you could set it all up for less than the cost of a single info board or those portable devices they give out at Stonehenge etc.

And the case for "democratising" information sources is beyond resistance. If they don't trust TMA information they can always make it clear that their account is the "official" one and all other info comes from "the community" (i.e. not edited or approved by them).

It's like we've been saying, "the big stone society" can't be kept in an official bottle once it's been uncorked.