I have set up this simple blog, which is about travel from a girl's point of view. The site is based on a Wordpress template and the content is pretty straighforward.

When the site was launched on the 1/09 , a 'travelettes' Google search would bring the site at the top position and with an average of 3000 visits in the first two weeks, the site proved popular enough.

Recently, Google has taken the site out of its index and I have no idea why. I have checked if the site had been hacked and didn't find anything suspicious, nothing in the database, no spam ... A test with Google malware diagnostic tool returns negative... 

The only odd thing I could find was the 'Top Search Queries' which returned a number of sex related or 'nokia' queries??!!!

Should I mention that I haven't used any particular tricks to improve rankings? Altogether, this is a very simple blog...

What sort of procedure could I try in order to identify the problems? Can you think of any reasons why the 'Top Search Queries' returns these odd results and how to fix this? Are there any sort of tools I could use to assess the site's 'health'?

Thanks in advance?