Superfeedr, the real-time push infrastructure startup, today launched a keyword tracking system for application developers. It’s essentially like Twitter’s long-forgotten Track service, but for the rest of the web. The company is San Francisco-based (although at the moment it’s a one-man shop and founder Julien Genestoux is traveling in Europe) and its existing service helps publishers enable the PubSubHubbub protocol, which provides RSS feeds with instant notifications of changes to websites.
The alternative to Superfeedr is to run a PubSubHubbub hub of your own (as Google and WordPress do), but some 800 publishers like Tumblr, Posterous, Six Apart and Gowalla use customizable Superfeedr hubs instead. The service is still mostly free, because Genestoux wants to maximize the flow of data across the web. And subscribers like Digg — which in its new version will automatically pull in stories from certain publishers — use Superfeedr for super-fast feeds. Genestoux said he expects to charge publishers for premium services (for example, users currently pay for custom landing pages).
The new tracking service will allow developers to get push notifications via API any time a specific keyword is mentioned in one of the 2.1 million feeds in Superfeedr’s system, and Superfeedr will charge $1 per 5000 notifications for users who exceed 25,000. Services built on top of Superfeedr’s tracking system can do things like set up keyword visualizations for users, or even instant message notifications.
These apps will function somewhat like Trackle and the many real-time search startups out there, but the advantage is that Superfeedr is instant for the many relevant feeds it already powers, which publish something like 25 million updates per day. However, Superfeedr’s tracking doesn’t include the uber real-time hub Twitter, because that company doesn’t want third parties to redistribute its content without a business relationship.
Superfeedr has raised $100,000 from Mark Cuban and Betaworks, and is advised by David Recordon of Facebook, Andrew Anker of Six Apart, and Jaiku founder Jyri Engeström. Genestoux said he hopes to raise additional funding in the coming months.
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