apt-get purge ubuntuone* landscape* unity-lens-shopping # gets rid of all Canonical tie-ins.

Not so hard, isn't it?

Why not have a click-through at install or on version upgrades that says something like "we want to install an easy way to add products to your search results for which we get payment: Allow, Deny" ... rather than default install something that is going to cause such negative press.

IFF then there is a wide-scale uptake then there is warrant for auto-install of those features.