One of the reviews that I had been postponing for a very long time is that comparing Jaiku with Twitter. Will definitely come up with this review soon.
Though I have accounts in both Twitter and Jaiku, I always found Jaiku to be far more advanced that Twitter. If you follow some of the older post in Jaiku, I would have given a comparison of Jaiku versus Twitter.
I am really happy that Jaiku is joining Google. They really deserve this.