April is here, which means it's almost time to pony up and render unto Caesar. We've gathered our receipts and other documents, and dragged ourselves to the strip-mall tax preparer or fired up do-it-yourself software to determine how big our refund is -- or how much we owe Uncle Sam. No one likes to pay taxes, but as we get ready to stand in line at the post office on the 15th, it might be useful to dispel some of the most common myths about this springtime ritual.