According to this article in the People's Daily the Year of the Tiger is a sucky year to get married. Apparently bad things can happen including an early spousal death. You also don't want to have a kid this year because Tiger babies can eat you out of house and home. However, it's a great time for business, unless you are a wedding photographer. On the plus side though, if you do get married, tux rentals will be cheaper, it will be easier to book a wedding venue and if you aren't that thrilled with your fiancee, there's a good chance one of you may not be around that long in the first place.
This may seem like silly superstition to the Western mind, but remember, these are the same folks who worry about bus cooties.