We've got quite a few siblings on the site. Some of them have been here since the near beginning of the site! I'm pleased as punch that you decided to join with your sister.
Also, I totally understand not letting your sister take all the glory. xD I've got my own sister, and she's growing into a very talented young woman. Kinda frightening, and I must remind her that I'm still awesome too. Haha!
So yeah. Welcome to YWS, and don't hesitate to chat me up whenever!
~ Jabber

Hope I have fun and meet interseting people along the way!