I thought etiquette was to ask first but i think the sensible thing would probably have been to say, 'I'm linking to your v helpful page, hope that's ok' - given that it's in the public domain anyway. But now I'm stuck because I have asked, he hasn't answered (most probably because he doesn't check emails very often/is away) and I think it'll look rude if I go ahead without his permission. So, I can't upload the post that is sitting in my drafts folder... Any ideas? Do you usually ask permission first?