Which way should the fan turn for winter use?

Although there are those who would say otherwise, it really doesn't matter much which way the fan turns regarding summer or winter. It does matter regarding whether you want air blown directly down upon you or sucked up past you toward the ceiling. Some would say that the fan should blow down in the winter, since hot air rises and the fan would blow it back down, but if you think about it, if the fan is blowing air toward the ceiling, the hot air up there has to go somewhere, like down when it reaches the walls. It is, once again, really a matter of what makes you comfortable in summer or winter.
Hope this helps.