Problem: You post a new entry to your weblog.  However, when you go look on your site the entry isn’t showing up.

Solution: You probably have your Template cached.  EE does not automatically reset your cache data when you post a new entry to a weblog.  If you wish for your caches to be cleared, then you can set that to happen under Admin > Global Weblog Preferences.

Also, if you set the entry date in the future, then with the default setup the entry will not appear on your site until then specified date/time come around.