Post as Another User: Click the link labelled Switch next to your username on the Post an Entry page to post an entry in a different journal, while you remain logged into the current account.
Downloadable Client: Certain downloadable clients allow you to log in as multiple users simultaneously. However, you will need to consult your preferred client's documentation and menu options to determine whether this feature is available.
Some changes have been made to LiveJournal, and we hope you enjoy them! As we continue to improve the site on a daily basis to make your experience here better and faster, we would greatly appreciate your feedback about these changes. Please let us know what we can do for you!