Taken from:
http://personalitycafe.com/isfp-articles/12067-characteristics-isfp.html
"Main Characteristics
ISFPs are found in about 6 percent of the general population. The best name for this type is free spirit, for they have an intense need for freedom. The simple rural life, life in the wilderness, the tribal/communal life - all these may call them. Their need for social interaction, however, is not as great as that of the type they most resemble, the ESFP. So an ISFP may forgo all social ties of any duration to preserve the freedom to wander. The lyric, "I was born under a wandering star...", might capture the spirit of the ISFP in this respect. The flower children of the 1960's may have been largely ISFPs, though the ESFPs also seem attracted to communing with others.
ISFPs also resemble INFPs in needing to achieve intensity of feeling. The focus, however, with the ISFPs seems to be more on the sensuous side than the meaningful side. The ISFP is orgastic, in the sense, demanding of life that it provide the excitement and pleasure of drinking deeply at the Dionysian well. Not revelry (that is the forte of the ESFP) but experience is what attracts the ISFP to these kinds of activities. Music, like wine, is incorporated and internalized, and the introverted nature of the ISFP requires this internalization. There is a reason why the flower became the symbol for what the flower children wanted: Flowers are warm, alive, sweet, colorful, rhythmic, natural, absolute, needing no statement, no interpretation - a pure being in self.
ISFPs are not articulate. They communicate through action. They do not verbalize their meanings, but, for example, offer a lovely flower and a smile. Their actions speak of the pastoral and the bucolic."
Apparently ISFPs are the best at being hippies.
Nevermind that description, ISFPs should be good at Fi things.
ISFPs are good friends.
Negative intuition ...
I didn't even know that was possible.