There seem to be a lot more sites starting to use MongoDB - its got a nice PECL driver which enables you to link it into PHP quite easily. Quite misleadingly a page states on the offical mongoDB site says:
"Generally, with MongoDB we are not building queries from strings, so traditional SQL Injection attacks are not a problem."
In PHP queries are passed in as objects. eg.
$db-&g
Forum:
SQL and Code Injection
