What is the best way to attract investments for a startup?

Build a great team and product and/or show traction and market potential (size, genuine problem you're attempting to fix). When pitching, describe what you do in a single sentence so that investors get it right away.

Is it something similar to Quora.com?

As I say, it's in stealth :-)

What is it Beepl.com?

It's an expertise platform, currently in stealth. You can register for an invite here: http://beepl.com

How do you decide that it is worth or not to write about the startup?

1) If they are European-based (I write for TechCrunch Europe)

2) The have real news e.g. a launch, raised funding, an interesting new feature or change in strategy etc.

3) I get the story *first*

Ask @sohear: