SIDS ... Such a simple-sounding acronym, yet these four little letters represent a parent's most terrifying nightmare, the unexplained death of an infant. Because many of the risk factors for SIDS, especially premature birth, low birth weight, and bed sharing, are commonly associated with twins and multiples, they are particularly at risk. Here's some important information for parents:

• READ about the connection between Twins and SIDS.
• WATCH this video about reducing the risk.
• Put your mind at ease. SIDS is actually a relatively rare phenomenon. While not entirely preventable, the rate of SIDS has been cut in half in recent years by changing the ways that babies sleep. Check out these safely sleeping siblings in the Sleeping Twins Photo Gallery.

Photo reprinted with permission of Zulu twins.

Meet this week's twins! Sweet Santas, Charlie and Michael, take a long winter's nap. It's tough being only two months old at Christmastime!
• Share your thoughts, opinions and advice in the comments section.
• More Worldless Wednesday Posts on About.com.
• Holiday Photo Gallery
• Index of All Photo Galleries
• Submit your holiday photos!

I'm always a little nostalgic on December 14th. It's a day I will never forget. On December 14, we find out that we were having twins. It was a shock like none other, completely unexpected. At that point I was already halfway through my first pregnancy, twenty weeks along in a pregnancy unmarred by any unusual signs or symptoms.

Everything changed that fateful day, bringing us a blessing we could never have imagined. Since then, December 14 is known as "You've Got Two" Day for our family. It's a day that I recognize the special gift I was given, and acknowledge the fun and joy that it has brought to my life.

Now you can tell your own story of how you find out you were having twins. Read my complete story and then share your story. Was it a surprise or confirmation of a suspicion?

I love this article displaying holiday cards featuring twins and multiples. Adorable! Capturing a great family photo for a holiday greeting is an annual rite of passage for many. Shared with family and friends, it preserves a moment in time and provides a record for reflecting back in future years.

© 2009 Pamela Prindle Fierro, licensed to About.com, Inc.

This is a picture of my twins from our own first Christmas card, when they were eight months old. I loved this picture, but it took two whole days to get it! I tried countless variations: with Santa hats, without Santa hats, with cute outfits, without cute outfits. It was really a challenge to get both twins upright, with good expressions. There are many other versions where one twin is crying or leaning over or pulling off her hat (or her sister's hat).
Now you can share your holiday greetings on this site! Try out the new Multiples Holiday Greetings feature, where you can upload your picture and share a little bit about your family and your holiday photo. Once you submit your entry, it will be reviewed and uploaded to the site. It may take a couple of days, so be sure to check back. (To see all the holiday greetings, just click here.)