Good question. Some sort of book marking system. There is a function where you subscribe to the threads. Unclick the ones you dont want and then you will be left with a list that you do.
However there may be an easier way so I'll keep a look out.
LOL, the problem is that if those numbers did win, you probably wouldn't win very much because they're the numbers from Lost so there's probably 1,000s of people using them. http://en.wikipedia.org/wiki/Lost_numbers#The_Numbers