Last post is 6 months old..
Most blogs that I've seen tend to regurgitate the same stuff over and over again...
Content is king...
Post daily...
Have a nice bio...
Use targeted hashtags...
Very basic stuff that won't teach you how to grow organically by 1k+ daily.
Hell, even most paid ebooks are not very good. There are only a couple I've seen that actually give out any useful information, one a WSO, another a guide by Vision Media.