@honeybird remember gmail was also in beta for a long time and was invitation only at the start
btw, the technique given by op worked for me
Also, after using it, its certainly much better than facebook and has less privacy concerns. I am sometimes terrified on sharing stuff on facebook as I dont know who can see that stuff and also due to mass interlinking between friends.
I cannot control if one of my professional friend or just and acquaintance tries to become friends with my family or close friends just by virtue of it showing that he has such and such mutual friends. The thought even scares the shit out of me.
Facebook is good for youngsters who dont have to manage expectations of various sections of society (even they get scared when their parents come on facebook) but for adult people the situation can become scary very fast.
google circles is a great way to keep different kind of people in one circle only so its a thumbs up from me
just my 2 cents
regards,