content: more tweaks to the 'Six years' article

Change-Id: I0fc12d2392a8abb50d95df410f86832496d07ace
Reviewed-on: https://go-review.googlesource.com/16790
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/content/6years.article b/content/6years.article
index 5617d78..1694dfd 100644
--- a/content/6years.article
+++ b/content/6years.article
@@ -8,12 +8,11 @@
 
 Six years ago today the Go language was released as an open source project.
 Since then, more than 780 contributors have made over 30,000 commits to the
-project's 22 repositories. The ecosystem is still growing, with GitHub
-reporting more than 90,000 Go repositories.
-And, offline, new Go events and user groups continue to pop up
-[[https://blog.golang.org/gophercon2015][around]]
+project's 22 repositories. The ecosystem continues to grow, with GitHub
+reporting more than 90,000 Go repositories. And, offline, we see new Go events
+and user groups pop up [[https://blog.golang.org/gophercon2015][around]]
 [[http://blog.golang.org/gouk15][the]]
-[[http://blog.golang.org/gopherchina][world]].
+[[http://blog.golang.org/gopherchina][world]] with regularity.
 
 .image 6years-gopher.png
 
@@ -37,15 +36,17 @@
 [[https://groups.google.com/forum/#!topic/Golang-nuts/8oCSjAiKXUQ][official Go plugin for Sublime Text]],
 with better support for other editors in the pipeline.
 
-Early next year we will release more improvements in Go 1.6, including HTTP/2
-support for [[https://golang.org/pkg/net/http/][net/http]] servers and clients,
+Early next year we will release more improvements in Go 1.6, including an
+[[https://en.wikipedia.org/wiki/Static_single_assignment_form][SSA]]-based
+optimizing compiler back end, HTTP/2 support for
+[[https://golang.org/pkg/net/http/][net/http]] servers and clients,
 an official package vendoring mechanism, support for blocks in text and HTML
 templates, a memory sanitizer that checks both Go and C/C++ code, and the usual
 assortment of other improvements and fixes.
 
-This is sixth time we have had the pleasure of writing a birthday blog post for
-Go, and we would not be doing it if not for the wonderful and passionate people
-in our community. The Go team would like to thank everyone who has contributed
-code, written an open source library, authored a blog post, helped a new
-gopher, or just given Go a try. Without you, Go would not be as complete,
+This is the sixth time we have had the pleasure of writing a birthday blog post
+for Go, and we would not be doing so if not for the wonderful and passionate
+people in our community. The Go team would like to thank everyone who has
+contributed code, written an open source library, authored a blog post, helped
+a new gopher, or just given Go a try. Without you, Go would not be as complete,
 useful, or successful as it is today. Thank you, and celebrate!