"...[customized and unique user experience] builds the visitor’s trust and helps you gain better traction."

Ditto this. If you're not focused on personal experiences, it is hard to (1) build or sell a product that people actually want and more importantly (2) engage in meaningful relationships with customers.

I'd love to see more digging in on #2 (relationships) in particular. We came from the relationship-angle, and only recently started leveraging that with more powerful targeting (http://www.olark.com/targeting).

In my opinion, a meaningful two-way customer relationship still trumps a simple "deal popup". However, targeting is a great tool for focusing our attention and cultivating those relationships :)