Interesting stuff. Here's another question: What would be the results on Earth if the planet captured an asteroid in an orbit thus creating double moons. Has anyone thought of such things?
http://www.freerepublic.com/focus/news/773250/posts
http://www.freerepublic.com/focus/f-news/816864/posts
http://www.freerepublic.com/focus/f-news/893881/posts
http://www.freerepublic.com/focus/f-news/1107346/posts
also slightly related:
http://www.freerepublic.com/focus/f-chat/1203912/posts
I guess I could have saved some time and bandwidth with...
http://www.freerepublic.com/focus/keyword?k=cruithne