Financial adviser & stockbroker blogs : Are there unique compliance or regulatory issues on publishing?

I‘m talking to a few financial advisers and stockbrokers who are considering blogs for themselves and their firms.

As is the case with lawyer blogs with ethical and liability concerns, are there unique regulatory, compliance, or ethical implications for financial advisers/stockbrokers publishing blogs? With securities I thought there may be issues regarding adequate disclosures, disclaimers and the like. I did some quick searches on Google and did not find anything.

If anyone is aware of such regulations, concerns, or knows of Internet sources for such information, please drop me an email or leave a comment. Thanks much.