diff --git a/README.md b/README.md
index 3509561..0f1bca2 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ It can be an alternative to `python -m pyftpdlib`, even though it does not cover
 ## Install
 ~~`cargo install intray`~~
 
-(Not published yet because some upstream denpendencies are still unstable.)
+(Not published yet because some upstream dependencies are still unstable.)
 
 Visit https://github.com/Gowee/intray/releases .
 
@@ -47,22 +47,32 @@ ARGS:
 ![A screenshot of Web UI](Screenshot.png)
 
 ## Notes
+
+### Listen on
 By default, intray listens on `[::]:8080`.
 
 For Linux-based system with `net.ipv6.bindv6only` be `0` (false), which is the default, it can be reached over either IPv4
-(e.g. [`http://127.0.0.1:8080`](http://127.0.0.1:8080)) or IPv6 (e.g. [`http://[::1]:8080`](http://[::1]:8080)). See also [`IPV6(7)`](http://man7.org/linux/man-pages/man7/ipv6.7.html).
+(e.g. [`http://127.0.0.1:8080`](http://127.0.0.1:8080)) or IPv6 (e.g. [`http://[::1]:8080`](http://[::1]:8080)). See also 
+[`IPV6(7)`](http://man7.org/linux/man-pages/man7/ipv6.7.html).
 
 For Windows and Linux other than the above, it can only be reached over IPv6. In case IPv4 is preferred, specify
 address manually.
 
+Intray is not serving locally by default. Keeping service exposed on the public Internet may lead to suffering from flooding.
+
+### Compatibility
+Due to the usage of modern Web features here and there and the lack of skills of the author to set up a Babel pipeline,
+Intray has poor compatibility with old-fashioned browsers, which unfortunately includes some of major browsers such as
+<abbr title="Internet Explorer">IE</abbr> and some (even slightly) old versions of <abbr title="Chromium">Chrome</abbr> and Firefox. 
+
 ## TODO
 - [x] Rewrite with tide (deprecating the original actix-web version).
 - [x] Rewrite Web UI (#1).
+- [x] No chunking for small files.
+- [x] Better reverse proxy support.
 - [ ] Authentication.
-- [ ] Support HTTPS without the need to setup Web server separatedly.
+- [ ] Support HTTPS without the need to set up Web server separately.
 - [ ] Support to limit space usage.
 - [ ] Upgrade tokio{,-fs} to 0.2 (still in alpha).
 - [ ] Fallback Web-page to support IE11 and so on.
-- [ ] Support retrying failed tasks and pausing/resuming progressing tasks.
-- [ ] No chunking for small file.
-- [ ] Better reverse proxy support.
\ No newline at end of file
+- [ ] Support retrying failed tasks and pausing/resuming progressing tasks.
\ No newline at end of file