Vodafone website hijack
Earlier today, campaigners noticed that tax dodgers Vodafone were running a competition through Twitter for the best tweet containing the hashtag #mademesmile.
The company was automatically publishing all such tweets on its website competition page. Within an hour, Vodafone's website was inundated with anti-tax avoidance messages. In case you missed it, here are a few examples:
(Abusive or off-topic comments will be deleted)