Planning and managing a business event can mean anything from hosting a small cocktail party to putting on international conferences and conventions and everything in between. Three of the key parts of any event, however, are invitations or registration in advance of the event, guest/attendee check-in at the actual event, and professional follow-up afterward.

Or Multimedia of London decided to make the guest/attendee management part of events simpler and more streamlined when it launched its Event Check-In Pro app for the iPad last year. With the success of that launch, the company retooled its app to offer two difference feature sets – standard and pro – and a range of pricing options.

The updated app, which hit the App Store late last month, offers a range of features that can be used for handling one-day workshops or week-long multi-session conferences.

“Boy, you sure have a lot of apps on your phone.”

“Well, it’s my job.”

“What’s your favorite?”

“Oh, I couldn’t choose. But hey, want to see one to set your skin crawling?”

It was the flush end of a pleasurably hot day — 85 degrees in March — and we were all sipping bitter cocktails out in my friend’s backyard, which was both his smoking room, beer garden, viticetum, opossum parlor and barbecue pit. I was enjoying the warm dusk with a group of six of my best friends, all of whom seemed interested, except for my girlfriend… who immediately grimaced.

“Girls Around Me? Again?” she scolded. “Don’t show them that.”

She turned to our friends, apologetically.

“He’s become obsessed with this app. It’s creepy.”

I sputtered, I nevered, and I denied it, but it was true. I had become obsessed with Girls Around Me, an app that perfectly distills many of the most worrying issues related to social networking, privacy and the rise of the smartphone into a perfect case study that anyone can understand.

It’s an app that can be interpreted many ways. It is as innocent as it is insidious; it is just as likely to be reacted to with laughter as it is with tears; it is as much of a novelty as it has the potential to be used a tool for rapists and stalkers.

And more than anything, it’s a wake-up call about privacy.