I actually joined Hubpages for links back to my site... That was the original reason I joined. Since then I have realized that there are so many other reasons that I didn't realize. I have found some EXTREMELY well written topics that I have learned so much from.
I obviously joined for the wrong reasons, because I didn't realize what this community was all about, but since I have learned and have embraced it. I have not found another community online that I enjoy as much as Hubpages! It is truly unique!