On the kanji details page there is a link "look up". Default is denshi.org, which would be great. But somehow it is linked to nciku.com, which seems to be a nice site too, but less useful for people studying Japanese.

Ah that can be confusing! Looks like it only happens to Japanese studying newcomers who haven't chosen a different dictionary from that drop down ever. I've fixed it and I'll upload it soon. Until then, you can choose a different dictionary, then choose denshi.org again and it should work.

Thanks for the report!