Local shared object

Local shared objects / LSO's are referred to as Flash cookies. A detailed description may be found on:
 * Wikipedia Local shared object
 * Adobe What are local shared objects?

Some useful information for the Internet user:
 * Adobe How to manage and disable Local Shared Objects

A study showing how local shared objects rewrite deleted browser cookies
 * Social Science Research Network Flash Cookies and Privacy

Study: Adobe Flash cookies pose vexing privacy questions

Firefox add-ons:
 * BetterPrivacy : visit | add-on
 * Ghostery : visit | add-on

see also: Privacy Policy