Rated 3 out of 5 stars

No Option to park it in the side bar - QN can
If note has url's they are not hot - nor are they in QN
If its going to be a free floating window, with no option to park in the sidebar, then a stay on top button is almost mandatory, not an issue in QN
Re previous comment about colors, QFN "adopts" the Theme color which in my opinion is correct (in my case thats black). The previous comment about it being anemic indicates the users theme is anemic. QN is not necessarily Post-It yellow, the color on each tab can be changed (hint hint)
If I could park it in the sidebar and urls were hot then I'd consider switching from QN to this one if .
The name was changed, to FastNotes or FoxNotes, IMO using QuickFox Notes is close to a breach of trademark - at least from an ethical perspective if not a legal one.

This review is for a previous version of the add-on (0.4B).