Actually, you'll still need an invite after the 30th for a free account, but there will be plenty available among your friends (like me!) who are already there. In fact, I believe if you set up your OpenID (http://www.dreamwidth.org/openid/) over there now, you'll get one automatically 4/30. You can also pay $3 for one month of account, and then let it lapse to a free one.
And yes, there will be one-touch cross-posting built in by then, although DW will allow much longer posts, so I'm not sure what will happen with a post longer than LJ allows! Also, DW has nifty coding to identify DW usernames vs. LJ usernames vs. IJ usernames, which LJ won't recognize, so that may be a bit of a sticky wicket. I'm planning on cross-posting to LJ with all commenting directing to my DW. I think I'll also be referring all my LJ recs lists to their DW mirrors, because keeping up two sites with the username problem would be a nightmare.
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And yes, there will be one-touch cross-posting built in by then, although DW will allow much longer posts, so I'm not sure what will happen with a post longer than LJ allows! Also, DW has nifty coding to identify DW usernames vs. LJ usernames vs. IJ usernames, which LJ won't recognize, so that may be a bit of a sticky wicket. I'm planning on cross-posting to LJ with all commenting directing to my DW. I think I'll also be referring all my LJ recs lists to their DW mirrors, because keeping up two sites with the username problem would be a nightmare.