Yes. Dropcoin is only listed on Alcurex. Dev had choosen DROP, but Alcurex could not use it, so they have used DRP (see OP).
DROP on Yobit is Faucetcoin.

How long does it takes to double my bitcoins???

Already 1 and half day past and only 0.07%??
Wtf

The percentage are only an indicator. Server with a bot lost connection with a doublebot.com server and there was no info about income.

I am afraid you are unable to understand.

When users send money to doublebot, it creates records in database, how much and who paid.

The money is sent to trading platforms (like btc-e.com) via API, and orders are placed. When some income is fixed it is received back on the server and server decide, which user's payments should be paid next.
The payments are in the special queue, that's why there is a difference in percentage.

But you should not know this all. You already said that my site is a ponzi.

No idea what you mean. Nothing changed.

if you're talking about scrypt, didn't they just convert it to bitcoin hashing?

You are unable to understand that there are something else except ponzi in the world.

What should I explain? The trading strategy of a bot? And why should I do this?

I have some questions for you. Please explain it:

How can you explain a dice game: Is it a ponzi?

Some time ago I invest money and bought a building. And I receive money from other people, which are living in this building now. Is building a ponzi?

Little girl in the next year will be 7% higher (taller), than today. Is she a ponzi?

A National Bank do not have all clients money at the same time: Is it a ponzi?

Disease can exist only if new members will join. Is it a ponzi?

xetsr can swallow. Are the people who put into his mouth - investors? Is xestr a ponzi too?