I think it would be a good idea if we all submitted our livejournals to this site. It would definitely draw a lot of attention from people interested in online journaling. As of now, there are only 4 LJers in their database.
As for getting LJ listed, I think that's pretty much done. I haven't been to a major search engine that doesn't list LJ somewhere. The key will be to get HIGH rankings, something I'll try to work on with the site designers in the coming weeks. (Who should I talk to about tweaking home page text, adding alt tags and meta tags, etc. ?) Hopefully we can really start spreading the word.
Also, is there a way to monitor the number of users? Some way of seeing what user # LJ is up to? I'd just like to know, since you've set the goal of 80,000 users. It would be cool to track progress.