Hi Judith, I'm a photog and I like tech and social = Google+ experiment. I added as many as I could up front (5,000 limit) as it creates a greater audience for my work and I get a larger chance to meet more people more quickly than on the other networking sites. I found your maps interesting BTW! I find the current group of people to be more tech, social, business minded than on other sites except maybe LinkedIn which I also enjoy. I like Google+ lack of restrictions with circles. I have had to block and drop just a very few. Thanks for your interesting posts.