The number of ISFPs who sometimes test as ESFP or who emphasize the Se aspect over Fi is interesting to me. Yet most of you feel you don't correlate to the ESFP description. More like, you just enjoy being more low key experiencers of life (which is still very ISFP like, of course).
Blackcat says he has a preference for Percieving, and I remember you wrote recently that you "don't get" feeling drained around people, and don't identify with that definition of introversion. But that is a big part of introversion usually. More questions would help sort it out whether you're actually E or I. The first question measures the test in terms of consciously deliberating what you allow yourself to experience or how you make choices from a J standpoint verses typically choosing on a or gut/environmental idea related P standpoint. There's a clear difference, but it might help if Alexei added more questions that take it out of the abstract and provide real life either/or scenarios.
On a sidenote, I see you as sort of like Kwai Chang Caine from Kung Fu..

Yet funnily, Lenore Thomson calls him an ESFP with balanced Fi in her book.. but very much a Se emphasis in the end. While Elvis was ISFP in her book, because of his emphasis on J.. a lot of his ideas sprung from introversion (also, he sat alone at home a lot and would shoot TV's..that kind of helps). On first glance though, it'd seem Caine was the ISFP, and Elvis the ESFP.