Valleywag has a really interesting post documenting the ages of some of the web’s most successful businesses and their founders.

Of the 18 founders listed in the comparison, only 4 of them were 30 years old or above when they started their company.

Is it shocking? No.  But I also wasn’t aware that some of these guys like Bill Gates and Steve Jobs were barely past their 20th birthday when they founded Microsoft and Apple.

So, are the young guys coming up with all of the good ideas online?   Is it still true in the web 2.0 world?

PS: Another interesting thing to note?  They’re all men. 

I look forward to seeing Valleywag.com’s next round of data: “Our next project: to track the distribution of outcomes for entrepreneurs in a particular age cohort. “