re: Address - yep, this is very much a little thing for a small handful of people who expressed an interest and is certainly not what we'd do (we'd use one of the merchant services most likely). And we do actually give copies away when people ask nicely so I'm not worried about that

I have edited up the request slightly tho, thanks (not that this info isn't unavailable I have to say).
At this point it would just be a donation service, yes. We can't offer any store versions for Bitcoin, only our own PC/Mac/Linux beta build and as long as the numbers are very small we can offer Android (larger numbers may be ok too but will require some extra work).
The friction to get into Bitcoin is very large, especially from the UK, so I have no expectations here. Like other sellers, it's about making a statement.
For Bitcoin to become mainstream it needs to be vastly more understandable and easier to buy. My personal view is that although Bitcoin may not be the final currency, there will be an online currency. However, there is definitely money pouring into making Bitcoin work for larger entities now and they may legitimise it on a far wider scale than at present. I'm sure the present bubble will burst, but the longer term may result in much higher values than we have now.
Edit: I am actually looking to do a little blog about my newbie Bitcoin experiences to try and help those starting out. A lot of the information out there is out of date or invalid for UK users (at present).