Our web app deal with social networks and different login systems fit with the app. MY question is which login frontend do you prefer.
a. a username / password text field form with submit button b. a sign in with twitter OAuth button only c. a facebook connect button only d. combination of a + b e. combination of a+b+c
I really feel that a segment of users are comfortable with A that they do not try a web app when its not there. and i feel that some LIKE to create a separate account to try before linking their Twitter/facebook account. anyone have any insights on login frontends/system's effect on user signups?