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+## Minify (JSMin) doesn't compress as much as product XYZ. Why not?
+
+The simple JSMin algorithm is the most reliable in PHP, but check the [CookBook](CookBook.wiki.md) to plug in other minifiers.
+
+## How fast is it?
+
+If you [serve static files](../static/README.md), it's as fast as your web server, and you should do this for high-traffic sites.
+
+The PHP-based server is not as fast, but still performs well thanks to an internal cache. Tips:
+
+  * **Use a reverse proxy** to cache the Minify URLs. This is by far the most important tip.
+  * Revision your Minify URIs (so far-off Expires headers will be sent). One way to do this is using [groups](UserGuide.wiki.md#using-groups-for-nicer-urls) and the [Minify_groupUri()](UserGuide.wiki.md#far-future-expires-headers) utility function. Without this, clients will re-request Minify URLs every 30 minutes to check for updates.
+  * Use the [APC/Memcache adapters](CookBook.wiki.md).
+  
+## Does it support gzip compression?
+
+Yes. Based on the browser's Accept-Encoding header.
+
+## Does it work with PHP opcode caches?
+
+Yes, and you can also use [APC for content caching](CookBook.wiki.md).
+
+## Can it minify remote files/the output of dynamic scripts?
+
+[Yes](CustomSource.wiki.md#non-file-sources), but it's not a straightforward setup, and probably best avoided.
+
+## Is there a minifier for HTML?
+
+The class `Minify_HTML` can do this (and minify embedded STYLE and SCRIPT elements), but it's too slow to use directly. You'd want to integrate it into a system that caches the output. E.g., in a CMS, keep one copy for editing and one minified for serving.
+
+## How does it ensure that the client can't request files it shouldn't have access to?
+
+Minify allows files to be specified using the URI, or using pre-configured sets of files. With URI-specified files, Minify is very careful to serve only JS/CSS files that are already public on your server, but if you hide public directories--with .htaccess, e.g.--Minify can't know that. Obvious Tip: don't put sensitive info in JS/CSS files inside DOC_ROOT :)
+
+An included option can disable URI-specified files so Minify will serve only the pre-configured file sets.
+
+## Is it used in production by any large-scale websites?
+
+The libraries are used in many CMS's and frameworks, but the use of `index.php` to serve URLs like http://example.com/min/f=hello.js probably is rare. Minify is made to drop in place to boost small to medium sites not already built for performance. 
+
+Version 2.1.1 had 54K downloads.
+
+## Can I use it with my commercial website or product?
+
+Yes. Minify is distributed under the [New BSD License](http://www.opensource.org/licenses/bsd-license.php).
+
+## How can I tell if my server cache is working?
+
+The easiest way is to place a Minify URL directly in your browser's address bar and refresh (F5), which should override the client-side caching that Minify specifies and force Minify to send you a complete response. With cache working, this response should take 100ms or so. Without cache, it could be multiple seconds.
+
+If you have file access to the server you can check your cache path directly for filenames beginning with `minify_`.
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