You will have to create a Live Journal account to post. At least it's free!https://www.livejournal.com/create.bml
For just a few bucks, you can get a paid account. I can attest that the site performance is better if you get a paid account. They have a queuing system that gives preference to paid users.
Once you have an account, you can come back to the community and click on the link to the right to add your own post. You can also comment on the posts of other members.