Those are firefox extensions. They can be ported to microb because microb is firefox3 based, but no way they can work with webkit.
By the way, my wishlist would be:
- Download
- Proxy settings (so privoxy can clean some of the ad infestation)
- Minimum font size setting (good for aging eyes)
And, of course, some kind of control (whitelists with wildcards) for js and flash would be great.