Hi! I just found out about this site too haha
(and just joined a few minutes ago)
Here in the Philippines, most (if not all) anime/Jmusic fans know of Maaya's music. Tough I haven't been to anime conventions recently, I think most fans start to know her as a seiyuu (voice actor).
As for me, I started to know about her during my high school days (circa 2003). Back then, I didn't know she was the seiyuu of Hitomi from my favorite anime of all time The Vision of Escaflowne and thought it was of great coincidence that she also sang "Platinum" from Card Captor Sakira. Since then, I have been crazy about her haha.