I will activate a new bitcoin lottery in a few days:
offering:
first prize of: 50% of all investments
second prize of: 20% of all investments
third prize of: 10% of all investments
Will put on spreadsheets of the winners each week with their bitcoin address and forename.
Will also run a program to import random number for every friday at 5:00 pm GMT.
Pre signup form will be attached below.
The generation of the random number should be provably fair, for example by using sha(block hash of the first block after 5:00 pm). Also, the 20% fee is too high. But as the above users mentioned, there are very few lottery players here, and it is better for you to make a dice or BJ site instead.