One of the most popular bitcoin dice sites ever, Rollin, is launching this promo and giveaway at bitcointalk to reward the loyal players of Rollin, bitcointalkers^* and just about everyone interested.

Bitcoin casino Rollin has a new Bot in its Chatter Box, it's called Lottery
Users can buy 10 tickets for 1 mBTC by entering /tip Lottery 1 in Chatter Box. It has no house edge. One winner takes all, paid directly to the winner's Rollin account. The winner is free to do with his winnings as he pleases, Rollin has no rollover requirement for any of its promotions. The winner can try his luck at Rollin, withdraw instantly, or buy more lottery tickets.

Giveaway

• First, say something in Rollin Chatter Box if you haven't done that yet this month. This is necessary for Lottery Bot to recognize the user. If you're a new Rollin user, you need to wager 0.5 mBTC (0.0005 BTC) before you can chat. You can do this from faucet if you want.
• Post your rollin username here to get a free ticket. If you're a new user, you can change your username once before posting your name.
• Senior Members get 2 free tickets, Hero and Legendary members get 3 free tickets
• Every day a maximum of 99^*** tickets are available for this giveaway. You can join daily. User “FreeLotteryTickets” will send the tickets to qualifying bitcointalk users
• Please play fair: only one account per person

Happy Hour
Every weekend (Saturday and Sunday, rollin time zone) we have Happy Hour. If you buy 10 (or more) Lottery Tickets in Rollin Chatter Box, you receive 10 extra Lottery Tickets for free.

• To apply for 10 free Lottery Tickets, post a (small) screenshot here.
• Happy Hour has 200 Lottery Tickets available per weekend (10 Lottery Tickets for 20 people)

Experimental
Currently Lottery Bot is still experimental. If any problem pops up, please know it's unintentional and we love to hear about it so we can fix it.
FreeLotteryTickets buys tickets from Lottery in batches of 10. If not all tickets are claimed, FreeLotteryTickets buys less than 100 tickets that day.
If FreeLotteryTickets has more than 1 ticket left before the draw, it gives the remaining tickets to Chatters in Rollin Chatter Box.

Draw
The Lottery is drawn every 1, 2 or 3 days, we're experimenting to see what works best for our users. The draw starts at 23:00h (11:00 PM) Amsterdam time^**, after which Lottery Bot waits for 2 new Bitcoin blocks to be found as input to generate a random number.
You can enter ~lottery nextdraw in Chatter Box on Rollin to see when the next draw will be.

Check your ticket(s)
You can enter ~lottery mytickets in Chatter Box on Rollin to see which Ticket(s) number(s) you have. And you can of course buy more tickets by tipping Lottery in Chatter Box.
It is possible the winner is someone who bought tickets outside of this giveaway, so it is not guaranteed a ticket from this giveaway wins. But if it does, the total pot is also raised by users who buy tickets in Chatter Box, so the prize can be higher than just FreeLotteryTickets' buy in.

More information
RollinGames blog – Lottery has more details on available commands to use in Rollin Chatter Box. It also explains how the winner is drawn. Lottery aims to be provably fair, and constructive criticism on the implementation is welcome.

^* Users with Red Trust on Default Trust level 3 are not allowed to join.
^** Central European Summer Time (CEST), UTC +2
^*** User “FreeLotteryTickets” buys the tickets by tipping “Lottery”. The maximum giveaway is 99 instead of 100 tickets, because any donating user has to keep one ticket for himself. If FreeLotteryTickets wins, it doubles the number of tickets in the giveaway the next day (2, 4 or 6 per person depending on Activity level).

Disclaimer: Rollin reserves the right to change, fine tune or cancel this giveaway at any moment, and to exclude people from the giveaway if we feel we need to do so.