Even more deal activity in the question and answer website market. Travel review aggregator NileGuide has bought up Localyte, a site that lets travelers ask locals questions (Sample: “Where is the best place to kite in Casablanca?” Consensus answer: Near the beach). Localyte claims a community of “tens of thousands”…

Here’s a serious lesson in the dangers of over-sharing: Blippy, the site both loved and vilified for letting users share their latest purchases with their friends, accidentally (we assume) posted the credit card numbers of some users online. Venturebeat determined that a search in Google (NSDQ: GOOG) for “site:blippy.com+‘from card’”…

Less than a year after launching a streamlined version of its site, which was designed for new users “looking to start off with a more simple experience,” Facebook says it’s no longer supporting the product. In a message on its Facebook profile, the company says it “learned a lot from…

Yahoo (NSDQ: YHOO) is apparently still going full-force with its Twitter competitor, Yahoo Meme. The company has now bought up the oh-so-clever domain name, Me.me, from the .ME domain registry, which is based in the country of Montenegro. No word on how much Yahoo paid. Yahoo, however, calls the purchase…

Twitter’s purchase of Twitter iPhone client Tweetie last week, along with its launch of a Blackberry app, have raised concerns among developers who believe the company could soon crowd out their own creations. CEO Evan Williams’ response at Twitter’s Chirp conference: “I know this is a controversial decision because there…

Twitter has always been mum on some key stats about its service—like how many people have actually signed up to use it. But at its Chirp conference Wednesday, co-founder Biz Stone finally made public some numbers. He says the site now has 105,779,710 registered users—and is adding 300,000 new users…

The Q&A market, which is seemingly getting more crowded by the day, may soon have a new competitor in Facebook. The social network is “testing a new feature that allows users to ask questions to the Facebook community,” the company tells us. A spokeswoman says it’s only available to a…

After months and months and months of speculation, Twitter is finally unveiling its long-awaited business model. Starting tomorrow, the company will sell ads—called “Promoted Tweets”—that show up at the top of the results when a user searches on Twitter for a specific keyword. The ads, which themselves are Tweets, will…

Twitter—which is still trying to do a better job of making itself accessible to the new Tweeter—is redesigning its home page for the second time in less than a year. Notably, the new design includes a prominent box addressed to those “New To Twitter.” Other features include an always-refreshing list…

Nearly two months after Google’s rocky introduction of ‘Buzz,’ the sharing service remains under fire from privacy advocates; eleven congressmen have written a letter to the chairman of the FTC urging the agency to investigate complaints about the service—and, perhaps more ominously for Google (NSDQ: GOOG), also look into the…

After being hounded for months about how it plans to make money, Twitter (finally) is set to provide an answer, likely at the company’s Chirp conference in mid-April. What’ll it be? The consensus is that an ad platform of some sort will be announced. But by our count, over the…

About that Twitter ad platform that was supposed to launch at South by Southwest but never materialized there ... Well, co-founder Biz Stone tells CNBC that “later this month (we’ll be) revealing exactly how we plan to make a sustainable source of income so we can build a business.” He…

I should have been at his party, the startup’s CEO told me. I knew I’d missed that invite. I tweeted it, he replied. It was South by Southwest Interactive (SXSWi) in real time. Blink, miss a tweet and you may miss a party or a surprise concert or wind up…

Microsoft’s experimental Office Labs group says it’s testing a new microblogging service called OfficeTalk—which “applies the base capabilities of microblogging to a business environment, enabling employees to post their thoughts, activities, and potentially valuable information to anyone who might be interested.” It’s an experiment but the Office Labs group does…

Twitter client HootSuite, which recently raised $1.9 million in funding, has now made an acquisition, buying up Android app developer Swift App. HootSuite says that Swift App was behind the development of HootSuite’s own Android app, which was released last week. The company says the acquisition “means quicker development for…

Plancast, a startup which lets users share their plans, has raised $800,000 from SoftTechVC, True Ventures, Founders Fund Angel, Zelkova Ventures, as well as a number of angel investors. On Plancast, users post what they plan on doing later; users can track each others’ accounts and also indicate publicly that…

It took just two years for Gabe Rivera to have four verticals, including tech “front page” Techmeme, running off his algorithm for discovering and highlighting news. The fourth site, BallBug, launched for opening day in 2006. It took four years to add one—Mediagazer, a site launching today to aggregate news…

Posterous, the popular quick blogging platform, has raised $4.4 million in additional funding, CEO Sachin Agarwal tells us. The site—which is likely best known for letting users blog simply by e-mailing text, photos, or files to a default Posterous account—has grand ambitions for its service; it says it “wants to…

Roger Ebert thrives on the web. Now he’d like to get paid for it but not by blocking access to the site or its 10,000-review archive. Instead the Chicago Sun-Times movie critic—a master blogger and tweeter—is going the value-added route, launching The Ebert Club: annual subscriptions $4.99 through the end…