Galvanized Metal Ceiling Fans - Guess what? The name of the informative article is only out and out misleading. The sole actual "disadvantage" in regards to your ceiling fan is what it will take to get one properly installed. Ceiling fans might be hard to install for the inexperienced do it yourselfer. In some cases, where the ceiling fan will be to be set up, you will need to run an electric line to the region. Hiring a competent, bonded and licensed electrician will probably save you much grief in the long term unless you're adept at doing this type of thing.
There's also the minor "con" that entails the issue of periodic care. Properly installed, a ceiling fan provides years and years of nice cooling and cost-savings in your heat bill (assuming you have a fan which allows one to reverse the blade direction). Allowed, you need to wipe the blades down in a while but then, everyone has household cleaning chores to take care of from time to time.
On occasion, ceiling fans get out of balance and require minor adjustments. The most frequent culprits are loose screws that attach the blades to the motor casing, blades that aren't at the same angle (pitch) as the rest of the blades and also a blade or blades that weigh somewhat more than the others. Ensure that all of the screws are tight without going into great detail. Whenever they aren't tightening the ones that run the fan and have come loose. When the wobbling has stopped, your issue was solved.
Otherwise, use a yardstick or other straight piece of wood and put it (together with the fan stopped) vertically in the outer edge of one of the blades. Rotate the blades by hand to ensure that every blade touches the stick. If one or more do not, merely (and gradually) bend the blade(s) so that their pitch matches the others and repeat the procedure until you're satisfied that each blade has the same pitch.