I applied in-person. The process took 4 days. I interviewed at Digital Butter (Hong Kong) in July 2013
Interview
You will be required to send a CV showing your skills, personality traits for the job. When I sent mine they immediately liked it and replied a day after. I simply found Digital Butter from searching online. They are one of the only companies in Hong Kong who accept interns so make sure you don't miss the opportunity. For the Interview, If you have a passion for what you want to do, they will be impressed. So go for it!
I applied online. The process took 1 week. I interviewed at Digital Butter in May 2010
Interview
I was interviewed at their old office. Butter has a very open atmosphere, which everyone was wearing casual tees and jeans. As it is an online marketing and website design company, it will be better if you know more about computer and any online marketing related stuff, or at least you have to be an internet person.