Full Tilt Poker is one of the world's leading online poker sites, and boasts the second largest player base of any poker room worldwide. One of the main reasons they are consistently home to so many poker fans is the stream of new and innovative ideas they come up with to make poker even more fun. Their most recent idea will make a big difference to tournament players - Multi-Entry tournaments. This gives players multiple chances to win and vastly increase the prize-pools on offer.
Multi-Entry tournaments are exactly as they sound, tournaments which you can enter more than once. You simply buy into the tournament multiple times, and each buy-in gets you a new stack on a new table of the tournament, and you may simultaneously play almost as many stacks as you want. There are some limitations in that Full Tilt doesn't allow you to have two stacks on the same table, so you can't buy-in more times than there are tables in the tournament. Any limit on the number of multiple entries is made pretty clear in the tournament lobby.
When you register for a tournament, if it allows multiple entries, you can select (up to 4) from a drop down menu when buying in, as shown below.
This means that playing a tournament can now become more fast-paced, more fun and potentially much more lucrative as you have more than one chance to win big, and with so many extra buy-ins the prize pools are huge. Multi-Entry tournaments come in a variety of formats, from standard freezeouts to knockouts, rebuys and even Rush Poker tournaments. It's super easy to keep track of all your entries thanks to an updated Tournament Info window which gives you all the details on the tournament and your current standings.
The quick-thinkers among you will have quite probably already come up with a fairly serious problem to all this. If you're not allowed to have more than one stack on a single table, as that would give you a very unfair advantage over the other players, but the number of tables shrinks as a tournament progresses and players get eliminated. How is playing at the same table avoided? If you're in a situation where say, for example, there are three tables left and you have a stack on each of them, and then a player gets eliminated and a table is broken up, the stack from the broken table will be merged with the smallest of your other two stacks. This means that now there will be two tables, and you will have two stacks, one of which will have just grown larger thanks to the merge.

Registered 4 times in the same MTT!
When a table breaks and the stack from that table gets merged with one of your others, the stack from the broken table is said to be eliminated. This means that not only are you still in the tournament, with one stack which just became the size and value of two stacks, but you also receive any payout from the place that your now-removed stack was at when the table broke. For example, if you had three stacks on three tables with 19 players left, when one more player is eliminated there will only be two tables of play, and two of your stacks will get merged, leaving you with two stacks on two tables. You will also receive the payout for 18th place, as your merged stack is considered to be "eliminated".
While it may sound a little complicated at first, Multi-Entry tournaments are incredibly easy to register for and play in, and can be very profitable given the increased chances of making the money, and even the possibility of making the money with more than one stack for a huge payout!