What are you thought on in-text ads for blogs?

Hi i've been running a blog for almost two years now. And i've used a couple of intext ads provider such as vibrant media and infolinks. I am thinking of not using intext ads anymore due to vibrant medias low earnings and infolinks just doesn't look good on my site. In case your wondering what kind of site i run its a mobile technology site that focuses on smartphones and tablets, the url is mobilenewsnow.net