I know I am a starseed because I have been "abducted" by my alien race (Nordics). I've breed hybrids for them and have met my children. I've seen my home planet a number of times - but I do not know the name of it. I always long for when I will see the planet and my children again.
I meet all of Walid's qualifications. However, I would like to add that I recently took a Meyers Briggs personality test and it indicated that I am an INFP. An INFP is a very laid back person that doesn't pay much attention to time, schedules, etc (all of the same qualifications that Walid lists).
While I value Walid's information, I wonder if there are more personality types that are Starseeds. Surely we are not all of the same? Isn't diversity what makes us so special?