https://listenbrainz.org/ is an open source scrobbler, with the advantage that it leverages the musicbrainz database and connects listens to artist and track IDs instead of names, avoiding duplicate confusion. You can keep last.fm and submit to both of you like.
> Not sure how much difference this makes over the long run
I tune in all fourths as well. For me it has made a huge difference since I made the jump some years ago. Putting voicings, patterns, etc., into muscular memory is faster and a lot less work. For my purposes, it makes the instrument more intuitive with a better ear-hand connection. Even very advanced players trip on the G-B strings oddity (with things like playing a fast, angular melody on different string sets, without preparation, for example).
It's really nice to play a scale, come to the octave, slide, and keep on playing the same shape across the higher strings. It's made the fretboard feel a lot more transparent to me.
Actually most if not all of those verb endings are used colloquially (the most important exception would be the second person plural, which is only used in some regions of Portugal).
2nd person singular is also never really used correctly, and even 1st person plural is sometimes replaced by 3rd person singular e.g. "a gente vai" instead of "nós vamos"
