Hi, thanks for the feedback! I'm very busy so not improving the extension currently, but I can help with usability.

You saw the toolbar pop up with a list of keywords? If a keyword button is coloured-in, matches were found, and you can scroll to them one-by-one by clicking the button.

Alternatively, you can use a keyboard shortcut. By default on Windows it's Alt+1 to jump to the next match for the keyword 1, and Alt+Shift+1 to jump to the previous match.

(On other platforms it's Alt+Shift+1 and Ctrl+Shift+1 due to shortcut conflicts.)

1) - MMS scrolls the page smoothly. It places coloured markers next to the scroll bar, just like Firefox, but it also pops out markers when you jump to the corresponding match. It also pulses the block of text containing the match.

2) - I do my best, but it's a hard problem! I don't know whether MMS is better than Firefox.

By the way, you may wish to disable automatic web search highlighting if you don't want that. Just open the popup and un-check Detect search engines.