Plugin Categories, Tags and Search Capability

One significant improvement would be to enhance the plugin categories and search capability. Today, based on another post, someone was searching for password protected pages. If I browse PAGE plugins, I have to page through 172 of them. If I search using the search plugins textbox/button, I get pages and pages of plugins—many completely unrelated to password protecting a page? Somewhat frustrating. If I search TAGS, I could not find password, protected, restricted, etc.