Over the weekend, people tried out around three hundred words, and taught the pluralizer a bunch of new words.
Some words I rejected:
German words (Büch -> Bücher, for example)
Kanji / Chinese (木 -> 木)
Someone also claimed that the plural of “singularity” is “not applicable”. Uh… funny, but my Physics background tells me that you can have more than one singularity. Black holes, anyone?
If you would like to feed the pluralizer, it can be found here.