We use this here in Australia and I think it's worth the $197m[0] each Federal election costs. In some State elections, the upper house ballot paper is 100cm metre wide,[1] and if someone numbers all the boxes, their preferential vote has to be tallied manually.

[0]http://www.aec.gov.au/Elections/australian_electoral_history... [1]http://www.northerndailyleader.com.au/story/2970592/upper-ho...