Re:The top five ideas (Score 1)

4 ...and using Bayesian or other similar filters, automatically block or highlight content. For blocking advertisements, or highlighting certain key passages...

This is probably the most important feature I can think of as well... this could potentially turn the browser into the search engine if the browser can create browse profiles based on user prefs... colate them at a central server, and match browse types to help you find sites that you would like but would not otherwise find for one reason or another.

I fully vote for bayesian browsing!!!

--gabe