I hope you have noticed earlier that the Steemit has added a new button as downvote just beside the upvote button. I can’t judge that the place of it is ok or not but it surely little tough to upvote in fat mode if using mobile browser.
Just sometimes ago i was curating some post then saw this new button and carefully click on upvote button.
However most times i do the upvote activity using eSteem app but surely some times using mobile browser too. I will check its availability in some Dapps and if find then surely will update.
Finally i welcome this new feature.
Thanks
