I posted about this in Site Suggestions a while back hoping the mods would see it, as I saw numerous complaints about this on "that other" ukulele site. I even tried to register myself and for the life of me could not come up with the answer to "What is this site about?" random question I got - I tried every possible spelling of those instruments we play and - nada.
Then I remembered that in Hawaiian the plural of ukulele is - ukulele, not ukuleles. And it worked. So - sort of a trick question and being a mainlander, not something that might have occurred to me had I not spent a lot of time in Hawaii as a kid. Since this is an international site, I dunno... mixed feelings on this! I've studied several languages and no two handle plurals the same way - some don't differentiate singular/plural, some do, some add a letter or a syllable... But if I was a newbie trying to register, I probably would have given up and moved on.