If you've got paraskavedekatriaphobia or friggatriskaidekaphobia, you're avoiding black cats, walking under ladders, stepping on cracks, breaking mirrors, or even leaving the house today. Here's how we avoided bad luck this week:

• Mobile search gets easier: The Mobile team just rolled out a bevy of updates to the Yahoo! oneSearch Shortcut to make searching on your cell even swifter. A new auto-locate feature uses cell tower triangulation and Wi-Fi to detect your whereabouts so you don't have to do any work. They've spiffed up Search Assist so that it remembers your recent search history (big fingered people rejoice!). And finally, it's now available for Windows Mobile devices. More here.
• Messenger for Mac mo betta: The latest beta release of Yahoo! Messenger for Mac came out this week with new features and squashes for more than three dozen bugs. They've fixed issues around file transfers, display images, voice, chat rooms, stealth settings, and webcam. When you report IM spam, the offender is also added to your ignore list. And you can now choose a new message style for your conversation windows, just to shake things up. More here.
• Honest Abe in pictures: Our 16th president hit the big two-oh-oh this week and to celebrate, the Library of Congress hooked up with Flickr Commons to give you a revealing look at Abraham Lincoln over a period of 20 years. You see him from the earliest known photo through to the Civil War years, along with views from his funeral. Born into the era when photography burst onto the scene, Lincoln has been called the most photographed man of his day. More on the Flickr blog.
• So long, MyWeb: With three bookmarking services, it was time to streamline. MyWeb will ride off into the sunset on March 18th, making room for Delicious (social bookmarks) and Yahoo! Bookmarks (private bookmarks), both of which have seen recent upgrades and new features. If you'd rather take your bookmarks elsewhere, you can also migrate to third-party services with our handy export tools. More on the Yahoo! Search Blog and our help pages.

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