Gah, I really like it! It's not common, not yet anyway. I think that if it gets much more popular in the US, then in about 25 years it'll seem about like
Robin or
Tanya does now. But at least it won't be like
Addison, heh.
I dislike the J spelling. I think it's wrong.
Emma sounds grandma-ish to me, still, strangely. I've never really liked it.
Gemma >
Emma >
Jemma