Biggerbrains: An excellent site for Ph.D students and young researchers.
When I was a Ph.D student, it seemed a very lonely and strange career path. Frankly speaking I would not recommend anyone to contemplate doing a Ph.D and doing a research career, or worse, becoming a Professor. In terms or ROI or “return on investment” (time, energy, money) I think it is one of the worst career choices. Nevertheless, for those crazy or strange people (like me) who have passion to be a researcher, one advantage of the internet age is to be connected with other young researchers. This site is an excellent resource for young researchers.