1. If a visitor is on page or a post and click login with one of the functions of your plugin it will redirect him/her to the page or post that he/she was or to the homepage?
2. If someone registers from facebook and make a comment, will it be automatically published on his/her wall/timeline? Also, if the user connects with twitter will there be too an automated publication on his/her profile? If not, can you add that function?
3. Support multi site?