I think the "take another poll!" call to action is a good idea for keeping people engaged, assuming there's content. Grok.io needs that - so far it's more concentrated on answering a question accurately than surfacing more questions for a user. The map is cool too - it'd be even neater if you inferred location based on IP address.

(I've worked with Blake on grok.io a bit.) Shall we try:

Is grok.io's forecasting model going to be more successful's than gopollgo.com's consensus model? Yes: http://grok.io/yuS No: http://grok.io/nuS