And the reblog option is not really ideal if you don't want to post your conversation onto your pretty tumblr again and again.

Exactly.

Tumblr is good for fic reccing but not for posting fic. Maybe that's why people haven't copped onto that quite yet.

See, I've even had trouble following recs, because often I can't figure out where the link to the actual fic is, or which fic people are talking about (sometimes they don't specify) and it's very frustrating.