This morning it was announced that in-app purchasing is now available for free apps.

Apple Opens Up ‘In App Purchasing’ for Free iPhone Applications – Mac Rumors
This was a problem up and till now for the free app market. There were a lot of (… Lite) or free etc versions of apps that had functionality removed.
Either way for a developer releasing both free and paid apps is a development burden and didn’t really benefit the users.
So now apple have opened the market for free apps to be released, get them installed and tested by users and then allow the developer to add paid contents afterwards.
Getting the user to purchase something is of course important, but firstly getting them to know about it and play it is a hurdle. So I have high expectations of this announcement.








