No there is not any trouble it is running perfectly in my PC. I think sometimes it happens. I would suggest you that delete all the cookies and temp files and open again this site. May be it would be work perfectly.

[DELETED]

Try this one.

Keyword Eye : Visual Keyword Suggestion Tool PPC, SEO, Niche Finder

Quentin

They have been updating their API, so it should be coming back up shortly!