At long last, after what seems like an eternity compared to the usually-rapid pace that most social networks evolve at, Flickr has implemented people-tagging. The functionality that most consider a defining characteristic of Facebook is now available on Flickr.

We've all been there: waking up on a Saturday morning, rolling out of bed, last night's drunkenly-debauched memories slowly swimming back into focus through your rheumy, sleep-encrusted eyes. You stagger into the kitchen or your study -- maybe there's a nice cup of coffee waiting for you. You sit down at your laptop -- or turn on your iPhone -- and check your mail.

There's the usual spam, the banal good-luck chain-letters and perhaps news that your copy of Windows 7 has just been dispatched. And then you see it.

'John Doe has tagged a photo of you on Facebook!'

Suddenly you find yourself plunged back into your memories of the night before. Desperately you poke and prod at the memory, praying the holiest damn prayer you've ever prayed, hoping that you didn't do something you'd later regret... something you'd later see on your computer screen... something your mother should never, ever see...

Quickly you un-tag yourself, cursing your friend, his family and his loved ones, praying you've done it quickly enough to avoid disaster.

And now ...? And now it can happen to you on both your social networks!

But wait! No! Flickr has gone one step further than Facebook! With Flickr you block people from tagging you in photos! With Flickr you can specify that only friends or family can tag you -- or no one at all!

The only real problem of course is that people don't often use Flickr for 'wild night out' photos -- that's usually reserved for Facebook. But would it be too crazy to suggest that Flickr could tie into the Facebook API and tag your Facebook friends on Flickr? Or will Facebook simply turn around and enable similar privacy options on tagging?

[via TechCrunch]