Sorry Sulfur. I call BS. Firefox has Google search on by default. Not to mention setting my home page until I change it. So, as you say, give people a choice.

like...

This is the first time you installed Firefox.

For privacy reasons, Firefox has the capability to block various ad servers on the Internet. These ad servers have the ability to track you across multiple web sites. By blocking them you keep your web surfing private.

Would you like to have ad blocking on by default?

[yes] [no]