How can I search for or find text within a web page on the iPhone?
Update: iOS 9 has added a dedicated search function to Safari that allows you to search web pages for specific text.
Surprisingly, there is no native "find" function in the version of Safari that comes with the iPhone.
If you are browsing a large piece of content, and need to find a particular word or section of the page quickly, this can present a serious problem.
Thankfully, you can add a search or text finding function to Safari on your iPhone with relative ease through the use of bookmarklets.
Refer to this post for more information about bookmarklets and how to add them to your iPhone.