[koski]

More than happy to answer. I am planning to write a blog post about technical parts soon.

The traffic was not that big for this kind of sites. Yesterday there seemed to be around 2.5K visitors from HN and each having average 2.1 page views per session.

The resizing service is implemented from scratch. It's very simple (resize and cache) and does not have the possibility to define point of interest (yet - I would like to do some experiences with that too).

I'm currently writing a technical blog post about Pixomize.