Local shared object

Local shared objects / LSO's are referred to as Flash cookies. A detailed description may be found on:

• Wikipedia
• What are local shared objects?

Some useful information for the Internet user:

• How to manage and disable Local Shared Objects

A study showing how local shared objects rewrite deleted browser cookies

• Flash Cookies and Privacy

Study: Adobe Flash cookies pose vexing privacy questions

Firefox add-ons:

• BetterPrivacy : visit | add-on
• Ghostery : visit | add-on