If anybody is interested in reading up on the topic of "last click attribution", I just put together a very simple article mashup using Yahoo! Pipes (which is a very cool tool that not a lot of people know about!). You can visit my mashup here: http://pipes.yahoo.com/mattattributionarticles/IopWOO9Z3hGYXYAZfKAMnA What is Pipes? Pipes is a free online service that lets you remix popular feed types and create data mashups using a visual editor. You can use Pipes to run your own web projects, or publish and share your own web services without ever having to write a line of code. If you want to view the source for my simple pipe, you can go here: http://pipes.yahoo.com/pipes/pipe.edit?_id=IopWOO9Z3hGYXYAZfKAMnA