Let me get the nasty topic of flagging out the way first (partly in reference to the sordid & personally targeted practice of the various 'let it all hang out' flag wars) I have not flagged or considered flagging any posts yet - unless you count the 'Oops I don't mean to do that, stupid touchscreen phone' finger clumsiness - believing that withholding a vote or remaining silent as a response, is sometimes speaks louder than a flag.

Upvoting my own posts: pointless, as I don't have any SP to even make a 1c impact, but besides that, I don't need to record my opinion of my own post for everyone to see, I can physically give myself a pat on the back if I'm happy with it :)

Upvoting other posts: I make sure that I have read the post and am of the opinion that it's good quality, by asking myself if I would be prepared to resteem it, amongst other things. I don't give any thought to when I vote, as reward is not the reason for my vote. I have, on occasion, voted before the 1st 15 minutes to ensure I did not get curation rewards.

PS: Thanks for the clarity on reasons for flagging. Consarn it! I didn't realise profanity was considered NSFW, seeing as it's such an integral part of society in general ;)