You should be able to sign up without a phone number, very disappointed that you can't already...
You shouldn't have to enter your phone number to sign up.
The "upgraded" version for new user accounts "requiring" phone number harvesting (confirmation using OUTDATED sms texting or callback) is HORRIFICALLY ABYSMAL
The prior model of
* email address
IS entirely sufficient. Xmpp Texting is greatly preferred.
OUTDATED sms-texting that constricts the user to ONE device.
Not everyone is foolish enough to whore themselves to "social" web "services" (not-free). Those same not-fools don't throw money away on sms-texting and not surprisingly are not thrilled by PSTN callback requirements.
Are you sure you won't "upgrade" to DNA sample submission? Or maybe mandate 24/7 wearing of google glass to make [viewed] others unwitting whores of their privacy?
android data spoofing