If you're wondering why you haven't been added back, it's because either...
a. i dislike you
b. you smell funny
C. you just added the community by clicking the + sign, which means you're only watching it. you have to click "to join this community, click here" at the top of the page.
and right now...um...all of you fall under C. so that means you better go to the user info page RIGHT NOW and click "click here"
that is all!