i) great app!!!
ii) would it be possible to use the applet settings dialog (like e.g. omwaether) to change the yellownote parameters - that way on could get rid of the 'tool' button and the user interface would be more standard
iii) my desktop screen real estate is scarce, could there be an option to not show any buttons at all and just have the note (tap inside to edit, tap elswhere to save). For me an applet should be as lean as possible.