Google has announced the initial roll-out of a new feature for its mobile product search: Local inventory checks.

Web-based Twitter client Brizzly has three major developments to report: a new free iPhone app, a new Brizzly Guide (which gives trending topics on Twitter their own hub pages as permanent resources for information on the top Twitter discussion items over time), and the acquisition of WikiRank. The Brizzly Guide is a user-editable area that fleshes out the backstory and adds contextual information to Twitter trends. Loading up the Guide shows the top 10 current trending topics at the left, and either a description of that topic or a prompt to be the first to explain the trend

Last night at its Campfire One event, Google officially launched the Google Apps Marketplace . The Google Apps Marketplace offers third-party developers and services a way to integrate directly with the Google Apps platform and sell that integration at whatever price point they choose. This is a huge win for the cloud because it finally allows other cloud services to tap into some of Google’s APIs for things like Gmail and Google Docs at a much deeper level, which can benefit their own customers, as well as offering additional value to Google Apps itself

One of the many initiatives on MySpace’s upcoming roadmap is a renewed focus on the applications platform, most notably surrounding games. The company announced this morning at the Game Developers Conference in San Francisco the launch of a new Games Gallery experience, a gaming-specific iPhone app, and a number of new tools and analytics for developers.

This post is part of Mashable’s Spark of Genius series, which highlights a unique feature of startups. If you would like to have your startup considered for inclusion, please see the details here . The series is made possible by Microsoft BizSpark.

Do you frequently make bad-decision texts — the kind of texts that likely show up on Texts From Last Night ? Well, then, you should probably download TigerText, a new iPhone app that will let you delete those digital mistakes from another person’s phone. TigerText [iTunes link], which was released yesterday, could be a boon for cheating politicians and foolishly sexting teens alike, according to founder Jeffrey Evans, who claims that he named the app before the Tiger Woods scandal

Ever wanted to Facebook friend someone you just met right on the spot?

More than 300,000 iPhone and iPod touch owners have shelled out to download Plants vs.

AdMob’s Mobile Metrics Report for January 2010 is out, highlighting several interesting facts based on an opt-in survey of consumers on iPhone, iPod touch, Android and webOS devices. In August 2009 we wrote (also based on a report by AdMob) that iPhone and iPod touch users are more likely to purchase paid applications than Android users. Here’s what we wrote back then: “Android (Android) users download, on average, 9.1 new apps a month.

Mobile ad network JiWire just released the stats from its latest public Wi-Fi study and found that 56% of connections are from mobile devices like the iPhone , the iPod touch, Android smartphones and Sony’s PSP handheld gaming console. JiWire serves ads through public Wi-Fi spots in places like airports, coffee shops and hotels