It looks like al Shabaab, the Somali branch of al Qaeda, is trying to get a share of the piracy profits. The post also referenced an interesting discussion of how al Shabaab is financed here.
Lloyds of London may be establishing a fleet of patrol boats to provide escorts through the Gulf of Aden for ships insured under their policies.
Royal Navy frigate HMS Cornwall not only broke up a pirate attack in progress, she took down the Yemeni-flagged dhow being used as a mother-ship, capturing 17 pirates and freeing 5 crewman who had been held hostage for 92 days.
Four Americans aboard the yacht S/V Quest were seized by pirates 240 nautical miles off the coast of Oman.
Chuck Hill's CG Blog 
Your last sentence should have read “Four Americans aboard the yacht S/V Quest who were warned not to enter into the waters where piracy has become endemic were seized by pirates 240 nautical miles off the coast of Oman.”
All four of the hostages were killed while negotiations were in progress.
http://www.aolnews.com/2011/02/22/reports-all-four-aboard-us-yacht-killed-by-somali-pirates/?ncid=webmail