I applied online. The process took 3 weeks. I interviewed at Chitika (Westborough, MA) in Feb 2013
Interview
Ist Interview - HR phone screen
2nd Interview - Some basic probability questions
Onsite - had 4 rounds of interviews with different team members
1st - mostly behavioural questions
2nd - Questions related to probability theory and some open ended modelling questions
3rd - mostly discussion about previous work
4th - 2 Brain teasers