"gotta say that I've witnessed a few circus-like gatherings at stone circles and I reckon that apart from a few shouty travellers the whole thing was very mellow"

I suppose stone circles can't be wrapped in cotton wool and this new "revived" interest in them has to take its course in whichever path it chooses to take. But they are very precious and also fragile not only the stones themselves but the ecosystem in which they have been built. I read somewhere that Machu Pichu (probably spelt it wrong) has had a new hideous hotel built near, and crowds now make their annual pilgrimage up to its splendid solitude. Luckily, the journey to Callanish from the south is so long that I'm sure not many of us will make it ;)