We use LiveJournal for archiving roleplay logs and character diaries. LiveJournal accounts are free, and it's easy to join.
The 
roadtoamber LiveJournal community is our main community; you are welcome to post your roleplay logs there if you'd like. We suggest that you join the community as a member, so you can easily read the posts on your own LiveJournal friends page.
Many people keep personal LiveJournals for their characters as well. These are aggregated on the friends page of the 
r2a_players LiveJournal. While you're encouraged to post the main community, frequent posters sometimes find it easier to just keep things on their own journals, so we support that as well.
Every day, a post is made to the roadtoamber LiveJournal, with an aggregated list of all of the day's posts by friends of r2a_players, by journal name and subject. Thus, if you watch the community, you'll also be notified of other posts.
If you'd like to get added to the friends list of r2a_players, send +mail to Cyndre and Surayya in-game. You might also want to friend it from your character journal.