I have a great idea for a Web 2.0 start-up. Let’s raise $40 million from top name VCs to do a start-up to allow 15-year-old girls make slideshows! Let’s recruit top engineering talent and have our founding team include really smart people like Max Levchin of Paypal fame.

It’s comical that no one seems to notice the elephant in the room with regards to worthless start-ups like RockYou and Slide. RockYou has $16.5 MM over two rounds from heavy hitters like Sequoia and LightSpeed. Slide has raised well over $15 MM over three rounds from folks like Khosla Ventures and The Founders Fund (Peter Thiel is a former co-founder of Paypal where Max Levchin, CEO of Slide, worked).

More then the majority of traffic from sites such as these are from MySpace or Facebook, what happens when social network sites shut you out? I’m not saying they won’t get traffic, or new streams of users from elsewhere, but the bulk of these all stem from teenages creating slideshows and you making money off the back of them!

We’ll see how long the bigger network sites allow third-party applications such as these to run, why would they want users signing up for external / competing websites, they will shift more towards creating their own widgets inhouse, and keep all traffic for themselves, thus killing off anything like this.

Move on.