Mining4Lindens
Allows you to earn free Linden Dollars using just the CPU power in your computer
Mining4Lindens is a new system currently in beta test that allows anyone with a Windows based computer to earn free Linden Dollars using just the CPU power in your computer.
After creating an account and downloading the client, the server will send your computer small blocks of data which will be processed in an attempt to determine an encryption hash that can be solved for each block.