Bronto's DJ Waldow forwarded me a copy of their latest customer newsletter in which they featured this blog as one of their resources. Thanks guys!
Apart from them mentioning this blog ;-) I find this newsletter particularly good because it's simple, short and contains valuable information. Another thing I like about it is the fact that it appears to have been sent from the Account Manager and the content also appears to have been handpicked by him for that particular customer - which makes it an even more personal experience.
I believe DJ once told me they send this newsletter out every two weeks and I'm pretty sure they are a huge success. DJ, if you're reading this, feel free to give us some more background on this newsletter in the comments!