Ultimate Blog Challenge Day 17 Day 17: A Day in History Share something from the past, either your personal past, your businesses’ past or the world’s past. Bookmark the History Channel’s webpage or http://www.on-this-day.com/ for ideas in the future! These are just some ideas you can use – like them, great! If not, come up with your own. Don’t forget to share your Day 17 post first on your own website, and then head over to the Facebook group at                               http://www.facebook.com/groups/UltimateBlogChallenge and share the URL of your post with the group. If you are tweeting, use the…