Ok this time I am in agreement with Cod on christmas cards. NO SCAN to anyone.
When we showed our scan to my parents who are now completely doing GPs, I was completely underwhelmed with their response, my Dad kept turning it upside down to try and figure out where his head was AND IT WAS COMPLETELY OBVIOUS then spent the next few minutes trying magic eye refocusing. We got our own back though with our 25minute video of the 20 week scan, hee hee.
OK deviation, but even those who are delighted and interested in your news do not want to see your scan.
Mentioning you are pregnant is fine, I signed a few from bump and am going with the general consensus now that it is slightly naff.