Thanks for the post tobixen, for me I really vote for anyone who has worked at writing a post. So my upvote goes to effort as much as to the quality of the content. I see some posts that a lot of effort has gone into and even though it may not necessarily have quality writing skills and style, and is not getting any or very few upvotes I will upvote. And yes I think it is good to upvote someone who upvotes mine, but also randomly upvote posts that I come across and like. Sorry this is wordy!