While using the web 2.0 in order to generate and direct traffic, you can use two different approaches:

Direct approach:

In here, you can draw a direct link in between the CPA offers and the websites that address the issue. For example, if you are promoting a CPA offer on home improvements you can create a web page about the methods to use while renovating a house on HubPages.com and then link the two.

Indirect approach:

Here, you will have to link up the web 2.0 sites to the money site that bears the CPA offers.