Intro

Today i noticed that "x" person blacklisted me, i never saw that user before and never spoke to him either but i got blacklisted anyway so i'm gonna now explain you how to avoid being blacklisted, please notice that it's not easy and if you want to use SG as you usually do this is not a good guide for you (and you will eventually get blacklisted).
In this guide i will be the most neutral has possible, keeping the point-of-view from a giveaway creator and the user that only joins giveaways.

thank you

Did you ever joined a giveaway and forgot to say "thank you"? yeah? well, you are most probably blacklisted by someone sir!
This is the most common reason to blacklist someone, it doens't matter if the giveaway was about a shitty bundle game, they will blacklist you anyway!
"I just have to say "thank you" on each giveaway and i will avoid getting blacklisted, GOT IT!" - WRONG! You will get blacklisted by saying "thank you" anyway, the only way possible to totally avoid it is to say "thank you" + adds, maybe a smile, maybe a cat gif, maybe even both!
"thank you plus adds, GOT IT!" - God Dammit! STFU! You will get blacklisted if you use the same gif or smile at least twice, without saying that you will also get blacklisted if someone dislikes the gif or the smile (that's why i don't use le lenny face anymore).
The point is you MUST say "thank you" in a unique way and put more effort in the comment then in the actual giveaway eveytime with no exceptions otherwise you will be blacklisted, you must also check everyone else's comments to be sure that no one has the same gif as you and avoid more then one person being blacklisted.

Giveaway OP

There are haters everywhere! If you create a giveaway of a bundle game you may be blacklisted, bundle games are usually indie, indie games are supported by the community, the community ALWAYS has someone against what most people support, someone against the community will blacklist you! This is very rare but can happen to everyone.
"That kinda sucks, but i guess i can giveaway some AAA titles sometimes" - NOPE! All AAA games have haters as well, no game is perfect and you will get blacklisted eventually.
"So i can't giveaway? how am i supposed to level up?" - No giveaways = no haters, you might just want to get a group of friends, create a private giveaway and share the link with them, DO NOT USE REAL FRIENDS some people are jealous and will blacklist you, just gather some truthworthy and nice people from SG forum and try to convince them to do it, NOT WITH PRIVATE GROUPS if someone looks into your profile they will think that you are using fake giveaways to level up and blacklist + report you, also don't create puzzle giveaways, there's always "that guy" asking for hints and crying about it because never solved a puzzle before, if you don't answer he will blacklist you, if you answer someone else will blacklist you, if you avoid giving direct answers he will not understand and add you, begg for mercy, you will eventually give him some very good hints but he still can't solve so he will blacklist you...
The point is being generous will blacklist you and karma is a B word so don't create giveaways to not be blacklisted.

I'm new here :D

If you are new here avoid being noticed, no one likes new people because they never understand the rules and they will eventually fall.
The Point is go read the FAQ or check the forum often but DO NOT leave any comments, sometimes people are bored and check your profile, they will blacklist you because you are new, you never created a giveaway or just because they are not in the mood.

[Thread] I just won a giveaway! :D

clicky will blacklist you.
The point is STFU about it and you will not be blacklisted.

Threads in general...

Threads usually stand to discuss a topic, warn about something or ask people about something, in Discussion Topics there's ALWAYS people that agree and people that don't agree, if you are OP someone that don't agree will blacklist you while someone that agrees might whitelist you BUT if you are not OP just stay away from there, most damage will be done to the people that participate in the thread.
In a Warning Topic if you are OP there's always someone that will find your warning pointless and blacklist you but if you are not OP and you want to leave a comment saying "thank you for the news" try to be as neutral as possible otherwise someone will blacklist you.
In a Question Topic if you are OP play dumb and stay neutral, once you get a answer close the topic that way people will not be able to find you anymore and forget about it, but if you are not OP leave a simple answer going directly to the point, if someone reply you starting a new discussion you failed on going directly to the point, someone will disagree and blacklist you.
The point is don't create threads and don't comment on any thread, you must be a robot with no opinion or feelings.

Trades

SteamGifts have trades section (RIP steamtrades) and since the domain is now the same a lot of new people are coming from there but you will ALWAYS get haters from trading and they will blacklist you.
The point is No Trades = No Haters, not the first time someone get -rep'd because of hate, i would not be surprised to see someone get blacklisted from hate.

Profile Picture

Many users will dislike your avatar, it doens't matter which one you use, someone will see racism, sexism or anything else on your avatar that makes him disapprove and blacklist you!
"I will use none then..." - Using the base "?" steam profile picture will get you blacklisted because it seems like you are a alt-account.
The point is try to use a profile picture from a game that many people like or from a game that only a few people know about to avoid being blacklisted.

The point of this thread is...

You will get blacklisted eventually.
The point of the point of this thread is i'm pretty sure someone blacklisted you already, if no one blacklisted until now you might destroy the world someday and haters will try stop you.

Solution to create a thread without being blacklisted by haters

The only way is to create a....

TOTALLY OBVIOUS CAPS ON GIVEAWAY

but it must be on the top of your thread because some people can't really see the obvious...

Solution to avoid random blacklists

I'm not sure if this happens but if "x" person can join giveaways from a person that he blacklisted this would make the "list" system kinda unfair, after all if you blacklist someone that means that you don't want to join their giveaways as well.

Thank you!

Thanks to "x" user i made this thread, you all should be pleased for his help!

Feel free to leave any suggestion about how people can blacklist you for no reason

btw me typing this...

View attached image.