Hello!
How to use:
1. Send any amount of ether to 0x9f4a20a695aaf44f92523ee7e568d2289957d9b6
2. Tell everyone about this smart contract. If other people send their ether to contract, you'll get +10% every week.
3. After one week (or later, if you want) call withdraw function of contract and get more ether than you send before!
* If you call withdraw function after 2 weeks, you get 20% and etc..
Smart contract is verified on etherscan and you can read it and understand, that is very honest contract.
https://etherscan.io/address/0x9f4a20a695aaf44f92523ee7e568d2289957d9b6#code