Google Webmaster tools keywords

Today when I logged in to my webmaster tools at google I was very chocked
to see that my keywords had been replaced by some really irrelevant ones.

Some days ago they were just fine but now they are showing keywords that does not even exist on my website, they are also showing file names as keywords.

Does anyone know what is causing this problem? Because if this is how google sees my website then will I not loose search engine ranking?

Here is my website: http://www.xMakeMoneyOnline.com

The blog is running on Wordpress 3.04 I think and I have not had any problems before. Yesterday I installed a verry popular addon for google analytics but I doubt that’s the problem.

Can this be that google scanned my website for keywords exactly when the website had an connection error or something? Because 000webhost is at place 3 in my keywords. =/

Please help!