Greetings @tamim.
Thank you for posing this query. When one is appreciative of an organisation...a group...a person....one desires to give in return. It appears that is what you do and many have responded to it.
Not really sure there is a pat answer as it will be different for everyone. However it appears your idea of upvoting content worthy of your admiration is a very welcome contribution. Thank you as well for investing in Steemit.....a contribution not everyone can make......it is very much appreciated.
bleujay was delighted to see your upvote and even though it was down-voted.......the thought remained of your desire to encouage a content provider. Is that not a contribution. It would appear you are bringing value to Steemit in a way unique to yourself....your person. What more could Steemians require.......
Wishing you all the best. Cheers.
Thank you @bluejay!
This is an encouraging comment. :)
Stay well!