Large sites using Ruby on Rails

I read the newspaper Computer Sweden today, and there was an article about how Ruby on Rails is getting thumbs up from major projects. It was very interesting, since one of the main cons of the framework is how it doesn’t scale very well.

I already knew that Twitter was one of the largest Rails sites, but I didn’t know that LinkedIn was another one. Another surprise was that the Swedish real estate site Hemnet (which is really good) is also based on Rails, delivering approximately 13 000 000 pages per week and it’s growing 40-50 % per year. When my girlfriend heard that it was a Rails site, she said “oh, that’s why it’s so slow”. I found that amusing.

Apparently, Hemnet have been satisfied with Ruby on Rails so far, with short development cycles and easy maintenance being the main advantages according to the project leader. But you should also know that they don’t seem to rely heavily on ActiveRecord, instead they are using their own stored procedures in an Oracle database for performance reasons.

Does anyone know of other large sites using Rails?