Disclaimer: I'm friends with the founders.
When you have 20? 100? 1000? The number of snippets one has to read goes up linearly as the company expands for each employee. That means that waste goes up geometrically for the entire company.
And forcing each employee to read from a few select people will never scale either. Soon you will want to add the head of research and then the head of HR (or just the HR guy, if you only have one) so that you can tap into everybodies network for recruits.
For a large company: create team alias, email it on Fridays.
Not that hard.
You could subscribe to a keyword, and pick up any snippets that mentioned it.
As someone who was running a service that could get in the way of engineers doing their job, this was a great way to get honest, grassroots info.