[freehunter]

I actually thought the other way around, I figured About.com was worth more than 1/3 of an Instagram.

[Achshar]

Instagram was paid in cash and stock whose value is now lower that what it was at the time of sale. This deal however is cash. So the comparison is not very simple.

[sp332]

At the time it was worth $1B total, regardless of how it has depreciated since. Anyway it's still more than 2x what About.com went for.