It was sort of like, if you build it they will come.  I just started posting and people found it— via the tumblr directory I guess.  I also think when you can see who people that you follow are following, you might check it that site.  I’ve never asked people to follow me or spread the word via direct message, but have asked for recommendations via tumblr’s food directory.  Tumblr’s stafff also recommended me months back and that increased my number of followers immensely.

Just keep posting! Best of luck!