I'm told by E_fink, who says he saw it on XGH, that Leib Tropper wrote a book on the Laws of Yichud. I'm sure its full of fabulous advice, and only the finest, unfiltered daas torah.
In other news, Bernie Madoff will be releasing a book on business ethics. Look for it at fine bookstores everywhere.
Search for more information about pots calling kettles black at 4torah.com.
Going to Israel? Now get 2 phones for the price of 1 (and free calls too) with Talk'n'Save.