Ok let's do the following:
1) Let's combine all Keyword-related ideas into one "Add Remarks (comments, keywords) field."
The annotations idea is a bit different because it implies possibility to annotate blocks of text and not the note as a whole.
2) Let's rename this idea to: Generalize the Link field into Remarks (comment, keywords) field

I generally agree with your conclusion. However we also need some kind of threshold, otherwise there will be too many features to be implemented right away. Right now I consider ideas with score less than 10 as not ready for implementation (this obviously doesn't apply to bugs)  .

I also think that we need to take into consideration the percentage of downvotes. E.g. if we have two ideas both having score of 15, but one has 20 upvotes and 5 downvotes, and other has just 15 upvotes, I think it is clear that the second one should be implemented first, because the votes are more unanimous.

Yes, thanks Chris!

Thomas, maybe implementing this suggestion would help?
http://roadmap.cintanotes.com/topic/13907-clip-text-into-currently-edited-note/ 

Maybe it will fit the bill if the links are not in the text but in a separate field?
Please take a look here: http://roadmap.cintanotes.com/topic/104471-note-to-note-generalize-link-field-adding-power-and-flexibility/

Well I used the term "mouse-oriented" more in the "not-keyboard-oriented" sense. Of course the visual indicator function is also very important, however since there is no keyboard shortcut for Ctrl+Clicking on a tag, where probably won't be a shortcut of double-clicking on a tag.

Thanks for the suggestion, Jeroen!