[aprdm]

Now a days with Postgres support of JSON, can't you build your NoSQL thingy around Postgres?

[brianwawok]

Do you want to store 10 PB in a Postgres cluster and do replication yourself?

You can, not always the best tool for the job...

[lsiebert]

I should point out that I recently read that the newest version of mysql is getting json support.