There is set of things called RULES:
https://bitcointalk.org/index.php?topic=703657.0My other general advice is: Don't do things you don't want others to do to you.
some hints:
Don'ts
no spam, no reflinks, no useless posts, no double post (search before making own), don't try to scam others, do not promote scam schemes, don't try to buy trust, when making a deal use escrow, don't beg ...
Do's
help others (if you can), contribute to community, be polite, watch and learn, ...
Enjoy your stay.
But I did not do any of the things you mentioned here... I made, was for me, a constructive message but the message was deleted and was cautioned not to make such messages again which left me dumbfounded.. What did I do? The message was brief and of kind words...