Look at page 8 in the e-zine. There are 3 options Low, Medium and High.
For music where you want to preserve dynamics such as acoustic music or solo instrumentals, I'ts recommended to start out with the Low setting. Here is the text from their FAQ:
 
Want to know about our intensity settings?
We currently offer three intensity options: low, medium and high. If maximum loudness is what you're after, opt for the high intensity; if you want to remain as true to your dynamics as possible, stick with the low intensity; and if you want to strike a nice balance between the two, try medium.
You can always preview all of your intensity options by clicking on the "Change Intensity" button during the preview stage.
Keep in mind that LANDR will analyze your track and set whichever default intensity it deems most appropriate. It changes depending on what you're uploading.

I'm happy with most of the results I've had using LANDR.  In fact, I was pleasantly surprised as I wasn't expecting it to be any good!   In my experience the best results, as with any mastering, come from using balanced mixes that aren't too hot.
 
As for it's integration into Sonar, I'm happy it's there as an option for me to use.

chilldanny
I'm happy with most of the results I've had using LANDR.  In fact, I was pleasantly surprised as I wasn't expecting it to be any good!   In my experience the best results, as with any mastering, come from using balanced mixes that aren't too hot.
 
As for it's integration into Sonar, I'm happy it's there as an option for me to use.

Indeed a good mix that is not excessively hot is a prerequisite. There is a note here on pre-mastering requirements.
The requirements are the same as what you would give a normal mastering engineer. Don't excessively process the master bus or make the mix too loud since you want to leave headroom for mastering. 
 
The really big advantage with Landr is that you can iteratively refine your mix as you go since you can almost instantaneously hear how a section of audio will sound mastered. Even if you have the free version of Landr you can keep using the preview on sections of your song by exporting just that region. Its really a new tool that can change how you mix when used this way. I wish I had this when I was mixing my stuff some years ago. Its "agile mixing" rather than waiting until the end to master and then find out your mix has problems :-) Its often too late to do anything at that stage.
 

SilverBlueMedallion
So i gave it a try on a finished mix of a song I have.. which had a Dynamic Range scoring of 13.   I mastered it on my own first and it still had a Dynamic Range scoring of 13.
 
LANDR made my mix ultra loud (increasing it by 4.5 db RMS) and squashed the dynamics to a scoring 8.
 
No thanks.  I will master on my own.

 
There is often essential documentation included in the eZine. People should read the eZine to find out about an update's features.  (I can't help but think of all the people who didn't read the eZine, didn't realize the Sizzle Bus was a bus effect, so they inserted it into a track and wondered why it "didn't work"...)
 
LANDR makes it clear they do not intend to replace mastering engineers, but supplement what can be done. There are plenty of examples given in the eZine of ways to use LANDR that don't impinge in any way on traditional mastering and in fact, make life easier for mastering engineers.
 
As a professional mastering engineer who is not threatened by LANDR at all (remember, LANDR doesn't do surgical mastering or restoration, only processing), I would have LOVED it if people could have had a free preview of what the dynamics processing they ask me to do would actually do to their music. For many clients I do separate masters with varying degrees of squashing, particularly if they ask me for maximum squashing and I'm trying to talk them out of it. It would be so easy if they compared what they wanted to one of the three options in LANDR.
 
And as any pro mastering engineer knows, adding dynamics and EQ changes will change the mix. I've had to do many a back-and-forth with a client because doing what they wanted altered the mix, so I suggested how to tweak their mix to preserve it in the light of what they wanted, and did another round. It would have saved me a lot of time if they could have had a rough idea - for free - before sending me their mix to master.

Seems like a good idea to me. I would place it in the same category as the "Monitorizer" tool. Another value add-on by CW to help make our work just that little bit easier

 I understand the both the pros and cons of Landr. I don't care for it myself and wish the CCC would facilitate Landr as an option much like the Vsti's, Melodyne, Boz Digital, Addictive Drums, etc. Maybe that should be a feature request.
 
Rocky

Pretty sure if the "Verbose Install" option is enabled in the Command Center, it is possible to skip installing the LANDR client software. I would recommend enabling the Verbose Install option to anyone who wants more control over installation. It usually just results in a few more mouse clicks during install.

 My studio budget for the year went to upgrading my monitors and upgrading Ozone 7 from standard to advanced along with Insight in hope that I could become acceptable at mastering on my own.
 I'm gonna be really pissed if LANDR does a better job than me 
 It will be good test of my skills, although my opinion may be biased.
 

Noel Borthwick [Cakewalk]

SilverBlueMedallion
yea it comes off bad.  It left a sour taste in my mouth.   "Our next update is to make more money through partnerships!"

That wasn't the intent at all. We  partner with companies that make serious contributions to the music production process with their tech. Celemony is another good example and I believe Landr is doing some pretty groundbreaking work in this area. The e-zine which covers many workflows enabled by this technology.

This comes across as different though.  The Melodyne inclusion is something Cake should be paying Celemony to use...this is the other way around where LANDR should be paying Cake.  
 
Agree LANDR would ideally be an optional part of the program install.  

scook
Pretty sure if the "Verbose Install" option is enabled in the Command Center, it is possible to skip installing the LANDR client software. I would recommend enabling the Verbose Install option to anyone who wants more control over installation. It usually just results in a few more mouse clicks during install.

Thanks Scook.
 
Rocky