Don’t betray your own privacy when you blog..
Everything on the Web is archived (check www.archive.org). It may be impossible to take something down once it is online so be careful what you post and what you allow others to post. So consider what would happen if your next employer Googled you. It doesn’t mean you shouldn’t put anything on the Web, just review everything first. Your holiday pictures of the South of France on Flickr are probably fine – but not the stag party in Magaluf. Your blog reflecting on news and issues of relevance to professionals like yourself may build you a professional reputation, but your no-holds-barred blog about the terrible kids and teachers at your inner-city school should probably be anonymous.