“We think the iPad is meant to be a Windows killer.”

Okay, yes, that’s slightly taken out of context — but it’s still one hell of a way to rile up developers. And to light a fire under some would-be entrepreneur fanboys. Here’s the full statement around the sentence:

Most people think the important thing about the iPad is its form factor: that it’s fundamentally a tablet computer. We think Apple has bigger ambitions. We think the iPad is meant to be a Windows killer. Or more precisely, a Windows transcender. We think Apple foresees a future in which the iPad is the default way people do what they now do with computers (and some other new things).

Following the iPad’s unveiling in January, people seem fairly evenly split about whether the device will be a failure, or the next big thing (I’m on the record as saying I think it will take some time to catch on, but then will quickly rise in popularity towards the future of computing). This is a smart bet for Y Combinator (and the startups that apply for this RFS) to make. If they’re right, and this is the future of computing, these startups getting to work around the time of the iPad launch (it’s still set to ship at the end of this month) should be well positioned to fully take advantage of the device.

And Y Combinator is thinking big for these startups too. It would be easy to tell companies to make apps for the iPad that are basically ports of current mobile apps, but the RFS points to this post by Facebook’s (and FriendFeed co-founder, and Gmail creator) Paul Buchheit, noting the future iPad applications may be unlike anything we’ve ever seen before.

Something else that is interesting to Y Combinator is how you get this new device in the door in businesses. They seem to think you’ll have to trick your company’s IT department:

One particularly interesting subproblem is how to introduce iPads into big companies. This will probably have to be done by stealth initially, as happened with microcomputers. They’ll have to be introduced as something individuals use, and which doesn’t really count as a computer and thus can’t be vetoed by the IT department. Don’t worry about this; it’s just a little tablet computer.

Just as iPhone app development has exploded, and Android developers are finally starting to see some real money, iPad developers are already in demand. Windows-killer or not, this is certainly an area to watch for the foreseeable future.

Grooveshark now says it has given up on its ambitions to get approved for the official App Store, claiming that Apple has been “ritually rejecting” the app for “primary selfish reasons”. We’ve heard that song before.

The startup says it spent many months developing the iPhone application, and on occasion went months without a hearing a peep out of Cupertino.

Denied access to the App Store, Grooveshark decided to head underground and is today releasing the app on Cydia, enabling people who have jailbroken their iPhone and iPod touch devices to enjoy it – and it is actually pretty cool.

Much like Spotify – who, for the record, has seen its iPhone app approved by Apple – premium aka VIP users of Grooveshark can use the app to search for tracks within a gigantic catalog of music at lightning speed and instantly stream them from the device. Playlists, favorites and whatnot are completely synced, so the experience for paying Grooveshark users who happen to have a jailbroken device are now able to basically get the exact same experience on their iPhone or iPod touch than using the recently revamped Web application.

The app also enables you to make tracks and entire playlists available offline, so you can enjoy the music even without the need to be connected.

All in all, it’s simply a great application that many would love to have to their iPhones, I’m sure.

At the very least, for those people there now exists an option to get it installed on there, despite Apple. Or they can just go out and buy any rival device that runs Android, or go get a Blackberry, or purchase a recent Palm phone …

If you co-founded the company that became Google AdSense, as Gil Elbaz did with Applied Semantics, you don’t have any problem finding investors when you want to start a new venture. Elbaz sold Applied Semantics to Google for $100 million in 2003, and launched his latest startup, Factual, last October. He doesn’t really need the money, but so many all-star investors were clamoring to get in that he raised just over $1 million in an angel round.

His angel investors include Marc Andreessen and Ben Horowitz via their Andreessen Horowitz fund, Bill Gross via Idealab, Esther Dyson, Demand Media CEO Richard Rosenblatt, Danny Rimer of Index Ventures, former MySQL CEO Mårten Mickos, as well as New York City seed fund the Founder Collective.

Factual is setting out to get people to create as many open databases as possible by providing tools for creating table son any topic, embedding them and sharing them. There are already hundreds fo thousands of tables on Factual, dome large some small. For instance, Creative Commons created a database filled with Websites using Creative Commons licenses that contains 4 million rows. All the data in Factual is editable in a wiki-like fashion and is available through Factual APIs.

Chris Dixon, founding partner of Founder Collective (and CEO of Hunch) says they invested because of Factual’s “huge ambition.” In order for the Web to become programmable, it needs data and lots of it. “I think of it as Wikipedia for structured database-like information,” says Dixon. It joins many other efforts pursuing similar ambitions, include Freebase, Wolfram Alpha, and even Google.