But its much more prominent in the USA right? I don't think many employers in the UK bother asking for social networking details
But there have been several cases in the UK of people being fired because of things they've posted on Facebook, so even if they haven't been required to give their account details when they were hired, their posts on the sites have still had negative effects on their jobs later down the line.
Also, don't just assume that because this is a site for Americans wanting to move to the UK, everyone posting is talking about things they have experienced in the US.
Many people posting here on UK-Yankee do currently live in the UK (and some of us are from the UK originally, myself included) and so personal experiences they write about may well have happened in the UK, not in the US.