Making new friends as an adult is hard.

It's possible; I've done it, but it's not like when you're young. When you're a kid, all it takes is a similar interest in the slide. Easy. Even in college, it can simply be the same dorm floor assignment.

But when you're a mom, and you look for things you have in common, you don't know where the land mines are. While adults have opinions on things, some are more easygoing about differences thereof. Other folks can get into a spitting rage on some issues. Like these:
1. Natural versus medicated childbirth
2. Scheduled caesarean versus old-fashioned surprise
3. Breast versus bottle
4. Crying it out versus immediate response
5. Spanking or not
6. Disposable versus cloth
7. Immunizations or not
8. TV: Harmless entertainment, useful tool in controlled amounts, evil mental & moral sewage?

And those are only in the first year or so of motherhood.
You don't know if that nice woman you meet at the park could be a friend; your kids certainly seem to hit it off. Your sons are even wearing the same outfit! Then a child misbehaves, she calls hers over and lights into the poor kid using terms you don't say even after your kids are in bed. Yeesh. Oops. You suddenly remember you need milk right now.
Then you stumble on to someone's blog, pretty much following links from your comments boxes, who plays classical music for her kids. Reads them good books. Limits their TV, both what and how much. Geography says you'll probably never meet in person, and the circumstances are a little peculiar (don't ask for details--she knows), but if you're sure if you should meet anonymously at the park you'd get along really well. And those issues 1-9 don't really matter so much anymore.
While motherhood can bring to light major differences in opinion, it also bridges a lot of boundaries. My sister and I are as different as chalk and cheese, but her advice of, "You don't get to choose what your kid needs therapy for" has gotten me through more than one rough spot. As mothers, we all universally want what's best for our child (or children). That much is easy to have in common.

I guess this is just a belated Happy Mothers' Day thanks to all of the other mothers out there who have supported me to be the best mother I can, those that I've met in the past six years or so. Naming names would take too long and I know I'd leave someone out.