I've just been reading a great article on the BBC website here in the UK (click here). It concerns cultural differences between the UK and Germany, and goes on to talk about German directness and British politeness in conversation.
The comments left by the readers (click here)also adds a lot of enjoyment and humour to the topic. There are lots of different views, with lots of other countries mentioned, including The Netherlands with it's famed bluntness.
I've read on this forum a few times how people from The Netherlands are proud of being direct in their conversation and tone, but in the UK this way of acting would be considered very rude. This also applies to the forums where a few Brits have gotten into trouble with humour that has not been understood as such :)
Have a read if you want, especially the readers comments, as I found it clarified a few things for me here, regarding how we speak to fellow micers and also how we react to perceived sleights, which may just be down to cultural differences.