said 11 months, 1 week ago:
Thank you Russel for posting this question.
I am personally very much familiar with Twitter, Linkedin, Xing and unfortunately FB
I am not sure if I would be ever interested into acquiring the knowledge of anything else for the following reasons:
1- Is it worth it?2- What can the others provide that the already mentioned can not?3- who is going to pay for the time that you are going to consume investing in learning a new engine / application?4- etc
In my opinion we should go with what is most known and proving to be efficient and only invest in learning to work on a new application when we are sure that one of the already established portals is going to close.
PS the answer does not really liaise to your question or at least directly but thought like asking this question since we are talking about most of the recognized online tools at the moment. If you feel like moving the question as a new topic please feel free.