To invite someone to be your colleague (friend), you must first be logged into TerpLink. Both of you must be members (remember it's free to join). Click the Members tab and search for the person you want to be your colleague (friend). Go to their profile by clicking on their name, and click the “Add as colleague” (friend) link under the person’s profile photo.
I would like to add that I just found out that an unknown and unnamed blogger has plagiarized large sections of my writing without attribution. I am neither that blogger myself and I do not condone their actions.