We saw this news over on Crunchgear this morning, and sure enough, the Apple Store has a download enabling 802.11n wireless networking on the majority of its current desktops and laptops. It'll cost you $1.99 (nickel and dime much, Apple?) but for that affordable price you can upgrade an Airport Extreme-equipped Mac Pro and every Core 2 Duo-based MacBook, MacBook Pro, and iMac (minus the 17-inch, 1.83GHz model). We're disappointed the MacMini didn't make the cut, but then it still uses Core Duo (note the missing "2"). Perhaps when/if the little guy gets an upgrade, it too will become eligible for wider-bandwidth Wi-Fi.
Twitter attempts to beef up security
Twitter lets users add a second layer of password protection, Jennifer Lopez has a new mobile brand, and Nextdoor brings text alerts to the neighborhood.