Adding autocomplete functionality to the blog search input field. The values provided are the tags and categories used in the blog.
It's useful because they can easily check what themes you writing for, and this way they could find the desired article more easily.
Well, depends. Current version (>1.1.2) reqires the name of the input field to be "s", so if your search field has such name, there is no problem at all.
Thank you for that question :). Actually it's escaping the search string with functions provided from WordPress, so if you find WordPress secure, means that the plugin is secure as well.
Use Contact the author for suport and other questions. Thanks!