I'm not seeing any on the website as a guest but wget http://thenounproject.com/download/zipped/svg_{1..10000}.zip && unzip '*.zip' && zip nouns *.svg sho

I'm not seeing any on the website as a guest but wget http://thenounproject.com/download/zipped/svg_{1..10000}.zip && unzip '*.zip' && zip nouns *.svg should do the trick