Not sure what I can say about paramotoring as a sport that you can't find via Google, so I'll try a personal perspective (with a little bit of fact-stuff in there):
Paramotoring is probably the lightest possible form of powered heavier-than-air human flight. A full set of paramotoring gear is lighter than a "trike" microlight (basically a hang glider with a trike and a propellor underneath) and less cumbersome than a hang glider.
As a result, it often falls into a curious legal "gap" and is somewhat hard to define - here in the UK, for example, an aircraft that is (a) launched from feet, not wheels, (b) carries under 11 litres of fuel, and (c) is only flown in VFR conditions (in short: flown during daylight, not in fog, not in air-traffic-control areas, away from people) does not require a license to fly. In other words, you could go out and buy one and fly it today! You shouldn't, of course: it'd be very easy to break the law once you were airborne (air law still applies to unqualified pilots, just like the highway code applies to cyclists), and furthermore nobody would insure you (which means that when you get yourself snarled up in power lines or something, and they have to cut you down, you're gonna get stung).
So I'm training with a tutor about 15 miles South-West of Oxford, where I live. I don't own my own equipment yet (I'm borrowing school equipment), but I'm hoping to buy my own this summer. I came to powered paragliding via hill paragliding (basically: running off the side of hills with a paraglider strapped to you). I did about 6-7 days training at hill paragliding about 14 years ago, with my dad (who was always interested in air sports, although he was never very good at them). I'd always been interested in powered paragliding, and so after my dad died (in an accident while training for an arctic expedition!) in 2012, I thought that a great use for the money I inherited would be to pick the sport up again. But round here, there aren't many hills, so hill paragliding was out anyway!
For me, powered paragliding represents freedom. I love the idea that - once I'm confident enough to fly without supervision - I'll be able to just fling myself into the air for a quick fly. You don't need an airfield - just enough land (owned by somebody friendly) to take off from; you don't need a hanger (a paraglider wing folds into the space of a large backpack; the harness is no larger and far lighter; and the engine is no bulkier than a mountain bike); you don't need to file a flight plan; you just push-off-and-go. Paragliders in flight are, in my experience, just about the most unintrusive kind of human flight: having tried flying light aeroplanes, paragliders, hang gliders, microlights, and parachuting (and having been in larger aeroplanes and hot air balloons: haven't yet been in a helicopter or glider), I can say that for me, nothing feels quite like the "dream" of unaided flight like a paraglider. Once you're up in the air, floating on the breeze, you could easily forget that you're being aided by a wing at all, and trick yourself into believing that you were actually flying by yourself.
Here's an awesome video (with thanks to /r/paragliding) which I think illustrates the freedom that I'm talking about.
And how Zipcar helps me with the sport:
Oh, and Zipcar? Zipcar just makes it really easy. I don't need to know in advance whether or not the weather (very variable, in my part of the world!) is going to be suitable for flying in advance: I can wait until the night before or even the morning of a flyable day, go pick up a car, and drive off to the club. Unlike a conventional rental, I don't need to book in advance to be sure of getting a car (and don't have any difficulty picking up or dropping off on Sundays), and unlike owning a car, it doesn't sit unused through the winter months.
All I need now is a job that will let me take holiday days at very-short notice, and I'm set for all the paramotoring fun I can handle. Right now, sadly, I'm mostly limited to weekends.
We Car has started to roll out in the UK, too (under a different brand), by the look of things: their prices look pretty similar to Zipcar's. I've also seen Community Car and WhipCar, the latter of which takes a different approach of letting car owners lend their cars to others, rather than owning their own fleet.