Interesting... Since I also seem to have some delegated SP I was wondering the same thing. (btw... Where/How can I check that 'label' to make sure that's what this amount actually is?)
Does anybody know what happens with those delegated SP over time (after the "30 days or so")? Do they disappear (are returned to the lender (@steem)) or are they added to the 'regular' SP in the wallet??
Thanks. :)