I know that if our posts get deleted by the mods and there are many of them, it means that we are making low value posts, they are being reported and eventually getting deleted. In some cases, we may get tagged by the DT members for being a shit poster.
That’s base on what you post and what the DT portrays it. Also multiple deletion of your post by DT could get you a temp ban but it is on rare occasions, below is a quote from one of the forum moderators
There is no set number and bans are taken on a case by case basis but bans are rarely given for a set amount of posts deleted. If you're caught spamming and all your posts are very low quality then you might get a temp ban. If you don't take the warning and continue making low quality content you'll usually get another ban with the duration doubled but if you have to be banned three times then the fourth is usually the last one you'll get. Thankfully most don't get that far these days but there's also less bans given out for sig spam. This is something we still should be enforcing at the root cause which is the sig campaigns themselves. If they're paying for this fluff time and time again then they should receive the punishment but that's rare. The only case I can think of recently was yobit. Thankfully most campaigns don't get that bad but yobit was like an avalanche of spam unleashed instantly so they had to be dealt with.
Some of my posts have been deleted by moderators, but I'm still fine until now. However there are some differences that I noticed, when I was a newbie, my short posts were more easily deleted by moderators but once I had a higher ranking, my short posts were fine. I don't know why that is
It’s simple when you were a newbie you didn’t have much understanding of the forum and what it entails but now you have grown in knowledge and your short posts carry semantic meaning than they were before. It is not a rank thing even now if you post a short post without meaning or value it will get deleted.
There are instances that can make people delete their own posts. There was a time I had network issues and that made me post the same thing twice... when I noticed, I have to come back the next day to delete one of the posts.
I have also seen some people who made applications to different signature campaigns at the same time and when accepted in one, they delete the other applications. I would also love to know if this is a bad practice.
There should be other reasons why people delete their posts, but I just gave the ones I have experienced.
Other reasons are most people after growing up in the forum rank and also knowledge they went back to their old posts and felt like they were certainly not of quality and probably due to shame or what they decide to delete it them selves. These posts could be those without proper English grammar, Altcoins posts of no value or bounty reports. The later is done so that the member can position himself to look more like a quality poster than a merit fisher when he starts ranking up
I mean, if the moderators will delete them then it will look like I made those posts and they are spammy posts and of no use to the forum or anyone. 
just shows some thought never went into the writing . 
