Online Service at Social Security

Social Security Administration has added the ability to establish an account and access your personal data online.  Seems to be a good site, permitting very strong passwords (upper/lower case, multiple symbols--I used LastPass capabilities), and some questions which really are personal and can't be determined from online data, at least not until the Facebook generation reaches SS eligibility.)  Even offers the tie-in with one's cellphone, which is becoming popular these days.  One problem, though: apparently it's only available through business hours, not 24/7. ??