I try to thank those who has helped me. I respond to all comments I get here. Even if it is just ,,nice post'' or ,,Thumbs up'' emoji. For a long time I was even upvoting them and only recently(when Commentrewarder was created) I became a bit more picky about comments I upvote. Getting more thoughtful comments is always nice. I don't know if thank enough for my big supporters like: You, acidyo, tarazkp, jkramer...In a way I feel that if I would thank very often that would be also begging/ pressuring to support me more. Still I try to thank from time to time without it sounding needy.
Gratitude is important, saying thank you also. I don't think I'd ever call a person needy for saying thank you; they're powerful words and speak highly of those who say them in any situation. Keep up the good work.