Generally I don't have to worry about rumble strips where I ride, but one recent installation really caught my attention. A narrowish two-lane road winding down a small river canyon with heavy traffic had a centerline rumble strip installed to avoid head-on collisions. As a cyclist, it makes the road more dangerous becuase drivers are now hesitant to cross the centerline when passing. Also, the centerline rumble strip effectively removed some of the minimal shoulder by pushing the lanes apart.
In some areas I have seen rumble strips doen well. Narrow strips (about 3") with frequent breaks, placed next to the white line on roads with standard shoulders don't bother me at all.
I never like to see drivers who are "driving by braille" either...