Users confuse search field with new question input.

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I have search analytics turned on for my Askbot site in Google Analytics, and I notice that occasionally a user will confuse the search field with an input to ask a new question.

Here's an example of a "search" that was recently performed on the site:

Compared to the USA, is the cost of livg higher or lower in Chile? Thank You

I think this might be due to the fact that the "Ask Your Question" button is so close to the search input that people may think that the two are linked, especially since the search button doesn't look like a button:

I don't know exactly what is happening, but I think users are entering a question in the search field, then pressing the return key expecting to create a new question on the site.

It is a very rare problem (happens maybe once per month).