I gotta say, for boasting the largest collection of uke chords on the internet, they're sure missing a lot. They even have entries (as for C9 and C13) where they just tell you the chord can't be formed because the chord has more than four notes. This is total BS—I play these chords regularly: you may not be able to play the full chord, but you can play enough to give the essence of the chord. Spot-checking on the C major chord, I notice that the third alternative they give, though useful in linear tuning, is unnecessarily hard on a reentrant instrument (7:0232, where 9:2010 produces the same sound with easier fingering). There are better, much more complete chord sources with less misinformation.
