You can create a sticky entry that will always be shown as the top entry on your latest entries page. You can use this post to include important information about your journal, make announcements, etc.
You can create a sticky entry in your personal journals and also in a community if you are its owner
How to create a sticky entry
To make a sticky entry, simply check the "sticky" box on the update page
or edit entry
Any entry can be made sticky by editing it and selecting the option to make it a sticky post, and similary any sticky entry can be converted back into a normal one by removing the checkbox and saving the entry. Sticky entries respect the same settings as normal entries: they can be posted at any privacy level, have tags, use non-default commenting options, etc.
You can only have one sticky entry at a time. If you already have a sticky entry, when you create or edit a new entry, the text for this feature will change to "Replace sticky post". When you have posted or edited an entry and selected the option to replace your sticky post, the previous entry used as a sticky post will become a normal entry, and it will be ordered in your journal based on the date & time the entry was posted.
Scheduled sticky entries
You can also schedule an entry
to post at a later date and have it become your sticky entry when it is posted. When the scheduled time & date arrives, the new sticky entry will replace the existing sticky entry.
Further ReadingWhat order do my entries appear in my journal? How do I exclude entries from RSS feeds and friends pages?