Jack and Jill ran up a hill, and then posted a status update about it on their joint Facebook profile: Jack Jill Smith.

Or was it Jack Smith-Jill Smith? Or Jack N JillSmith? Jack&Jill Smith?

You might have come across a growing trend of couples who create one personal Facebook profile using a combination of their names. It's not recommended, because Facebook's rules state that only one person should be in control of a personal profile and that the profile should be a real name. A couple's combo profile can result in Facebook deleting the account if discovered.

The concept harks back to the classic thought of one family contact: one home phone number for "the Robinsons," one joint bank account, one family e-mail address.

But many online professionals will have a hard time understanding why that would be desirable, when a great deal of importance is put on online individuality and personal space.

So why would a couple do this? And what are the downsides?

Some couples like to share one page because one or both of them are not active on Facebook, and having a single account makes it easier for the family to update friends. Other couples might do it because they want to share everything with each other and prove they have nothing to hide (or perhaps discourage unfaithful online flirting).

When experienced online users were asked about their thoughts on couples sharing a page, there was an abundance of disgust at the idea. Most responses from people in their 20s and 30s assumed any couple that do so must have unhealthy trust or dependency issues.

So couples, that means if you choose to have one profile, be aware you'll get plenty of eye-rolling and judgment for going against the Facebook status quo.

But there's also the issue of confusion. How do your friends know who posted? What do you put for the birth date? And friends might be frustrated that they can't send you a personal message.

Friends will tag both of you in a photo that might have one spouse. And if there's a fight -- or worse, a breakup -- who gets the page?

There are solutions that might work for some lovebirds. Each person can have an individual profile, but the couple create a separate fan page to represent the entity. It's the same type of page a company would have. Friends can connect by "liking" the couple, and the couple can use that page for family-related news.

That's the choice Facebook recommends, but a fan page doesn't have privacy settings. Don't use a fan page to post things that you want private.

There's another option, although it's frowned on by Facebook: Create a separate new fake profile for the entity. (If it gets deleted, at least you don't lose your individual accounts.) Each individual can post on the couple's profile, making it clear which of the better half is writing on the wall and which is responding to other friends. And there's the option to still post as one voice.

But there's not much you can do about your friends' gag reflexes.