Mobile payment startup Square lands $100 million venture investment

More news about the twitter guys. Now Jack Dorsey and his company Square.

The infusion from Kleiner Perkins Caufield & Byers, announced Wednesday, values the 18-month-old company -- which turns a smartphone or iPad into a credit-card reader -- at more than $1 billion. If you think that's kinda whack, you're not alone.

More information here.