Chris,
That's sort of OK as far as it goes, but it will not capture those who
try to join by email - only those who apply via the web UI.
There are a number of ways this can be handled.
One of which would be to include in the confirmation email (sent after a +subscribe command) a link to a page where the user can provide the requested information. That link could include a unique coding so that no log in is required.
Shal
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