I do not up vote the comments which often declare sentences like " Wow, what post" " Great post", "Nice thought", etc. I love to up vote those who make me realize through their comments that they have read the post/ or those who put a true criticism on post, be it negative/positive because i believe, those who comment with sincerity are the original and genius person here and they need do be credited for their efforts. I believe on merit and never thinks of devaluing a person who bring something valuable here. I do up vote what i thing is worth praising. thanks a lot for the true guide,