This is a log generated by User:WelcomeBot (and sometimes User:BrownBot) running pywikipedia's welcome.py. It operates under the eye and on behalf of the Welcoming Committee. It registers all the users welcomed by this botscript as well as the number of contributions at the time of their welcoming. The log moves to a new page every day.
These people will be happy to help you answer any questions you have about Wikiquote, if you want to approach someone directly. General questions can be asked at the Village pump.