OK people, this is driving me crazy, it's time you learn the difference between then and than.
Then is used in setting out a sequence of events. For example, "I read about 8 topics today where people misused the word 'than' instead of 'then', then my head exploded."
It can also be used to indicate an effect of a cause. For example, "If people knew how to use 'then' and 'than' properly, then I wouldn't have had to make this thread."
Than is used to compare things. For example "I would rather pour battery acid into my eyes than read another topic in which the majority of people don't know how to use 'then' and 'than'."