Upload & Sell: Off
I often find it's just as easy to use Google to search the site. It is very powerful, particularly when using the advanced search operators.
For example, in Google:
site:fredmiranda.com search words
Then in the results list that Google gives you, you can use the Search Tools to further refine the search, limiting it to only recent posts or posts between certain dates, for example.
If you use Firefox as your browser, I also suggest checking out the "Googlebar Lite" add-on for the browser. It makes a search box always available, it has a "search this site" button so you don't have to type the "site:fredmiranda.com", and it puts the search terms at the top of the page so when you get to the page you want you can just click on the words and it will take you to that place on the page.
Slightly off topic, but I occasionally find Google Alerts handy, too. Google will email you when it finds your search terms.