Yup, I upvote early commenters too....real comments that is. :) I don't have a lot of steem power but it is a practice I adopted early on. I think it's fair to encourage people to connect more than just the usual, nice photo, or story.
Thanks for the insight here. I like the idea of bookmarking - I usually go through my replies to find people I like to follow and it takes me longer than I probably need to be on here :)