I resisted for the longest time because the thought of transferring all my fic recs was so daunting. (I have literally hundreds by now). But I compromised by just linking to my master lists.

Mostly I'm using it for meta so far and it's proving extreme useful! Not only the tagging and descriptions which are so very handy; it's also interesting to see who else has tagged the posts I tag, and follow their lists. It's like deviantart: you can lose yourself just browsing other people's favorites.