Changes to wiki entries on a site can be accepted, revised, or rejected by the site's community. In that way, pages on wiki sites are expanding and changing all the time. In fact, on a big wiki like Wikipedia, thousands of pages change every day. At certain times of the day therecan be 50 or more pages changing every minute! Somestime the changes may be as simple as a corrected spelling or grammartical error. Other time they are changes or additionsto the content.