Read the excellent post by Neil Saunders on using ruby and mongodb to archive his posts on FriendFeed, prompting me to finally write down my own experiences with mongodb. So here goes... Let's have a look at the pilot SNP data from the 1000genomes project. The data released in April 2009 contain lists of SNPs from a low-coverage sequencing effort in the CEU (European descent), YRI (African) and JP