If you mean mlp in general, I was born in 1986 and so in the height of their popularity! I had a lot of them, and even rescued ones from charity shops etc I wish I knew where they went, I assume my collection got left behind when we moved once. Huge bummer... i also watched the movies and tv shows, and also got the magazine and books! If you mean FiM then I noticed a lot of gifs and such on tumblr around March, and googled it. At first I hated the fact they made a new mlp! I thought the style was so different! A friend at Kitacon 2011 started talking about it also, and persuaded me to check it out. After I learned it was Lauren Faust who designed it, that wavered my opinion a little, and after watching it... WELL! I was hooked!