Yes, I (Hive account@brianoflondon) am definitely topping up Podping from my personal stash of somewhere north of 145,000,000,000,000 RC's :-) There's simple no way that someone who has north of 15k HP can use that all socially.

The RC delegating tool I've built is also quite sophisticated. If any account delegates Posting Authority to Podping, Podping will try to make use of its RCs if it can.