Just when you thought you were safe to browse Facebook without spending a dime, this happens.

Don't freak out and start pasting weird statuses on your profile, Facebook is still free, but, there's a chance you'll be shelling out money on your upcoming visits.

Facebook is adding a Shopping button, according to Mashable, that will be introduced in a future update.

This means, you can buy stuff without ever leaving Facebook. THIS IS DANGEROUS. Especially dangerous if you've had a glass of wine or seven.

I'm gonna need someone to remind me to sign off of Facebook when I'm feeling the spending itch.

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