Doubler is a type of money making online. U can double ur money fast in doubler site. Though u can lose it either.

How doubler works ? U invest ur money in a fixed amount (usually doubler sites let u invest about $1, $2, $5, $10, or the bigger like $50 and $100). Let's say, u're the first investor (and invest in the $1 amount), so u're placed in the top of the list. Then, if there are 2 more people that invest the same amount as u (each $1), then u got $2 (sometimes ur profit got cut a fixed percentage for the site's admin as a fee to maintain the site, etc). Anyway, u get almost/real double of ur initial investment. Then the people that just below u have to wait till there are 2 more people invest to go out of the list and get his/her payments. Repeat this again and again until there are no more people investing because the lists get so long and new investors lose interest because they would have to wait for too long to get double their money. Usually when things gets stuck like this, the site would go down, and the admin would run with the rest of the money (which is why I said that u can lose ur money in doubler site either).

I will put doublers that I followed in forum though I dont really followed doublers much. See it there for their plans and whether they are paying or not (don't forget to see the date and hours when I posted cause it's important to make sure that the doublers still safe to invested in).