There are certain announcements that everyone really should know about, or get a chance to read.
Things like:
* Live Help disappearing and the new support portal (blogged, but more people didn't know than people who did know)
* changes in LindeX tier (blogged, but seeing how often it comes up, many missed it)
* payment issues (blogged, but still the majority doesn't know)
* dangers of buying L$ from third parties, most notably eBay (never publically announced)
* update payment info (sent to a select few by third party leading to possible phising concerns)
* the existance of landbots (hinted at in a end of First Land blog post, now long burried)
The blog is far too transient for important announcements (a few grid hick-ups or don't log on for a few days and it won't be listed anymore) that everyone should know, and not everyone knows someone who bothers to keep up-to-date, or reads the forums.
If the account portion of the site had a "My Message" or "Important Announcements" section and LL makes an effort to promote the existance of it, then everyone has a way to keep up-to-date.
A few things could/should be "stickied" (so that new residents will see it - like the landbot and eBay warning) and as long as LL refrains from posting "noise" (lookie! pretty skies!) to it, it will stay informative and useful.
An in-world personal announcement that a new message was posted would go a long as well, since as it is, most people don't ever really go to the site at all.
LL really needs a decent way of being able to inform the majority of residents about some things and there currently really isn't anything like that.