I registered several Twitter accounts over the years and each time I was prompted to provide a phone number so they could verify the account (they typically send out a verification code via SMS to confirm).

But a year ago I setup an account and I still haven't been prompted to provide a phone number. This is some weird anomaly in Twitter's systems, and I'd love to know if there's some set of behaviors or steps I took to not get that prompt.

I have a phone number on standby in-case they ask for one, but I'm kind of enjoying not having to provide one since phone numbers are linked to meat-space identities and I enjoy my new found 'anonymity', although Twitter probably has other ways besides phone numbers to learn who you really are, so it's more a pseudonymous account.