I’ve been using a simple tool on some small websites called 103bees.
It’s a real-time online tool for webmasters, bloggers and internet marketers that is highly focused on natural search engine traffic analytics. It provides tons of detailed statistics and in-depth information on the search terms that drive targeted traffic to your websites.
It’s a small javascript code insert (similar to Google Analytics) and reports on search querys, allowing you to analyse what engines are referring and the search term. The main features are
- Latest Search Hits
- Top Landing Pages
- Rankings
- Long Tail Analysis
And it’s free !
It also includes a simple API if you need to interface with it, I’m hoping to do develop a custom mashup in the future.
You can also promote funny search terms

Give it a go — 103bees.com