Need an Introduction to Tiny Core? Or peruse Core Concepts.
You should have used the search, there's already a thread for this, see:http://forum.tinycorelinux.net/index.php/topic,19304.0.html
Instead of installing an ad-blocking plugin, you could edit your /etc/hosts file. This way it works for any program running on your box.There are threads about this here on the forum.This one in particular: http://forum.tinycorelinux.net/index.php/topic,19361.msg119288.html