Keystone Crossings has numerous services that require the user to be registered and logged in. Specifically, participation in surveys, polls, and discussion forums. This greatly reduces the threat of phantom users being created for nefarious purposes and also reduces the management headaches when users forget their passwords, change e-mail addresses, etc.
A shortcoming is that the third-party application that KC uses for "social authentication" did not support Yahoo as an authentical source. Most of KC's potential participants have Yahoo accounts by virtue of participating in the PRR-FAX and PRR-Modeling forums.
KC is pleased to announce that, as of today, support has been added for Yahoo!
If you already created an account on KC and wish to use Yahoo, login via the Yahoo icon. When it realizes that your e-mail address matches an existing account, you will be prompted to join the accounts. Thereafter, you can login via Yahoo.
In a few months, the ability to create local accounts on the site will once again be removed. It was hastily added last November for the annual modeling survey, when numerous users with only Yahoo accounts voiced their inability to participate otherwise.