I'd like to know the source of lyrics that were downloaded. With lyrics I find on Google, I prefix that with the domain where I found them surrounded by brackets ("[" and "]"). But there's no record for lyrics found by the program. Setting this field to something other than what are supported by MusicBee would send a suggestion to Steven that it be added. If he gets a lot of people setting the new field to "newreleasetoday.com", perhaps he should add built-in support for that site.
On a related note, when I was using a client before I found MusicBee, I added "[not found]" or "[no lyrics found]" to the lyrics field if I couldn't find any. Now that MusicBee has better support for lyrics, I'd like a quick way to search for tracks with the lyrics field set to one of those strings. I can't do that yet.