Dripping Content for every User a customer asked me about content dripping in drupal. he said that it works in wordpress, but he need that in drupal.

so first of all what is content dripping? He need its for his own customers, who pay for a abo of its site content. So the abo runs for e.g. 10 weeks and the user gets 10 nodes with content on them, e.g.  chapters of a book.

So what he needs now is that the content "dripps" to the user, so the user gets every week a new chapter.

My first intention was to use rules, trigger and node_access to build up a custom set of rules to give the user the permissions once a week.

Then i searched around a lot and found a php script what does excactly that. It gets a list of all members, looks for the date of the abo and checks against a cck field in the node, and if the date is higher than the week of the abo + abo registration date, the content gets accessible.

but it would be much easier and better if i had a module...

So is there any module that does excatly that? As far as i know is content dripping a well known method in online marketing, so maybe there is something?
You could in fact develop your own module to do the above - for example, set a value attached to each user account of number of 'drips' left, which is then decremented by each pageview/similar, and then the total is refreshed at the start of the next billing period, for example by using a scheduled task implemented via the cron system.