- Free users: 3 posts
Early adopters: 10 posts
Paid Users: 20 posts
Y'know, it isn't such a bad idea. If you have more to say than your limit, you can always add things to the same post by editing... up to the size limit of one single entry (whatever that might be). I said in a comment that I could be limited to 1 post a day and I'd be okay... a little grumbly, but I'd be okay. This is assuming the limit is actual number of posts, not number of database accesses for journal entries.
[Update - 1750h]
It's been postponed until the community posting elements have been implemented and I presume until a few other things have been ironed out. So, you should be able to post past your limit for the time being...
I say again. If you can't afford $2.08/month, then you have Way Bigger Problems than not being able to post more than 3 LiveJournal entries a day. Like EATING, for example.