With the exploding popularity of the iPhone, enterprises will have to deal with it sooner rather than later.

In the pro column: At least some analysts, most notably Gartner, have given the iPhone their blessing. Software providers are creating business-oriented apps for the iPhone. Apple apparently sees enterprise potential in the iPhone, seeing as how it added encryption and native support for Microsoft's Exchange to the latest model.

Cons: Security questions could hamper enterprise adoption of the iPhone, as could IT's understandable reluctance to support multiple mobile devices.

But here's another cause for concern: Compared to BlackBerry users, lots of iPhone users are shallow, self-absorbed jerks, according to a recent study. While you may not have a choice as to whether to share a cubicle with an iPhone owner, you might want to think twice before dating one.

According to a recent survey by Retrevo, which bills itself as "the ultimate electronics marketplace" on its Web site, iPhone owners think "cool gadgets" make a potential mate three times more attractive than a college degree. (The inverse is true of BlackBerry owners.) Thirty-three percent of iPhone owners have texted or e-mailed someone to break off a relationship vs. 22 percent of BlackBerry owners. Twenty percent of iPhone owners frequently use it to watch adult material, vs. 12 percent of BlackBerry owners.

For the study, an independent panel surveyed 445 iPhone and BlackBerry owners (non-Retrevo users) distributed across gender, age, income and location in the United States.