Google posted today that 20% of the queries they receive have not been seen in the past 90 days, and this is a reason to utilize broad match. I agree, but with a severe caveat. Your broad match keywords need to have bouncers, or fences built around it.

With the new Keywords + Placements feature you do not have to create seperate campaigns for keyword and placement-targeted campaigns. In each Ad-group, you now have tabs for each content network method… cool!