SprintWeb used to be a walled garden developed by Sprint. However it seems there is some light at the end of the tunnel.

According to Cnet “Sprint Web also adds an adaptive home page that will deliver
personalized content based on the user’s browsing. Sprint Web is
available on more than 40 Sprint phones; current customers don’t need
to take any action to upgrade”

Well, I would say: Congrats for realizing that you cannot control customers these days.