Life would be much simpler if those responsible for defending corporate reputations only had to worry about good old-fashioned F-bombs.

But four-letter words are just one of a growing list of fears for marketers and corporate communications pros striving to keep their social media channels brand-safe.  What happens when an organization runs afoul of new standards, guidelines, codes of conduct, terms and conditions, or — this is where it gets serious — actual binding rules from a regulator?

Anyone responsible for their organization’s social media engagement, and those community managers on the front lines, should have a thorough understanding of why their activities are being scrutinized, and by whom:

• FTC — Most consumer marketers are well aware the U.S. Federal Trade Commission created Guides Concerning the Use of Endorsements and Testimonials in Advertising last fall.  What they may not know is that Washington is already starting to take action against companies for things like inadequate disclosure of sponsored posts and blogger payola.  Women’s clothing retailer Ann Taylor was on the receiving end of one such rebuke (PDF).

• FINRA — The Financial Industry Regulatory Authority, which oversees brokerage firms and investment professionals, is worried about consumers getting duped through social media.  In a regulatory notice, “Guidance on Blogs and Social Networking Web Sites,” FINRA warned the financial services industry they had better pull in the reins and increase surveillance on those selling stock, insurance or other similar investment products online.  Just last week, FINRA fined Piper Jaffray $700,000 for not archiving old emails.  Imagine what will happen when the regulator gets around to searching for a bank’s years-old Twitter posts or deleted Facebook wall posts.

• FDA — Long known for tightly restricting the marketing messages from pharmaceutical companies, the U.S. Food and Drug Administration held public hearings last year to better understand how social media changed the game for drugmakers, healthcare professionals and patients.  Even before new rules are published, a few gutsier brands are betting their one-way approach (brand talks but consumers can’t talk back) will pass muster.  Two examples: Johnson & Johnson’s ADHD Moms page and Boehringer-Ingelheim ’s DRIVE4COPD page, both on Facebook.

• Facebook — Much of the debate about Facebook’s new heft as a marketing platform has centered on rights of consumers to protect their private data.  Yet the responsibility for preventing abuses falls to the brands that use Facebook to reach consumers, and to developers hired to build applications on the platform.  Facebook is not a government agency or a utility company; it’s a private company.  Just like the Seinfeld episodes where Kramer, Jerry and George are barred from various eateries (i.e., Poppy’s Pizza and the Soup Nazi, pictured above ), it behooves social marketers to truly understand the letter and spirit of Facebook’s rules rather than risking a misstep on a platform used by 500 million consumers.

There, I’ve ranted about F-bombs for all this time without actually dropping one.  I’ll probably lose some SEO points for that.