The working mommy site that I enjoy is Mommy Tracked which is such a fun site for working moms! I get their newletter too where you'll find fun articles and information that will keep you smiling.
Then, of course, I must give a shout out to the new Philly Moms Blog. I started out subscribing to the NYC Moms Blog, since it was the closest in proximity and because I love that city. When I found out they were launching a Philly site, I was really excited and have since been invited to blog with them. I'm really having fun meeting so many moms through this fun group already! Check it out! You can also find out what moms are chatting about all over the country through their sister sites. I hope you love it like I do!