Yep, that is it! Just sign up for a free account and play all the free games! They have games and things you can buy - but I really love the word "free"!
now i have a job where others can come in and see my computer screen immediately, so a game is not easy to hide. BUT, i had a job where i was somewhat hidden, so i used to sit on POGO all day. My favorite games were pop-it, dominoes and the gem game, i forgot it's name for some reason