not yet but planning on one investment site
What is that invesment are you planning to get? If you want to do some investment with based on ponzi I would not recommend it because at last you will lose all of your money better you get signature campaign, most of them are get bitcoin from signature campaing and that is a good way to earn some of your bitcoin
yeah now use the most common investment ponzi system, and therefore I prefer trading. and it is definitely the signature campaign is the best option