Flickr has an option to pay a modest fee for upgraded, ad-free service. Tumblr should offer the same.
If I wanted to see materialistic marketing images put forth by H&M and Target, I’d follow these stores. I understand someone must pay for Tumblr’s servers and am happy to do my part to keep the community afloat, but not at the expense of the carefully curated safe zone I’ve crafted here.
I’d rather pay a few dollars per month to continue browsing Tumblr with my usual sense of serenity than pay nothing and see intrusive advertising inserted after every third or fourth post.
Facebook and Twitter, this applies to both of you as well.