The directory search is a search that enables users to search for other livejournal members by location, time last updated, age, interests, and friends or any combination of the five.
At this time, only paid, early adopter, and permanent account holders can use the directory due the strain it causes the servers. There are plans to bring back partial directory functionality in the future for free users, but full functionality will be reserved for paid, early adopter, and permanent account holders. Any changes in directory policy will be announced in livejournal's news area (http://www.livejournal.com/news.bml).
This can be split up into two FAQs or the first part can be cut out completely. Since the return of the directory I've seen a fair number of requests about free users in the directory and think it would be easier to have one standardized FAQ.