The UK Financial Services Authority (FSA) devoted most of issue 30 of its Market Watch newsletter (released on November 19) to emphasizing its concerns over the spreading of false or misleading rumors about listed companies.  

The FSA considers that spreading false or misleading rumors about companies can be a "very damaging" form of market abuse, particularly in volatile market conditions. It has been carrying out this work in order to assess the policies and procedures firms have in place for dealing with rumors that circulate in the market.  

In order to help firms address the issue, the FSA sets out in Market Watch 30 examples of good and poor practices identified from its thematic work with respect to rumors.  

http://www.fsa.gov.uk/pubs/newsletters/mw_newsletter30.pdf