"We're with the FAA"

I've read lots of stories about it and if finally happened to me, I had
my first ramp check. I flew into South Haven, MI (LWA) today to get
fuel, it's self serve, and as I was fueling two men wearing ID's around
their necks and holding clipboards approached my plane. I couldn't
read what their ID's said, but I thought to myself they may be FAA
guys. They both stood by the pump and didn't interupt me while I was
fueling. As soon as I finished pumping they introduced themselves and
said "we're with the FAA, from the Grand Rapids FSDO". The first thing
they asked is if I was Part 91 and where I flew in from and where I was
going next and why I flew into South Haven. I said to get fuel. Next
they wanted to see my license, medical, registration, and airworthyness
certificate. I gave them all the documents. They asked when the last
annual on the plane was and where it was done, I told them and they
wrote that information down. They asked if I had a GPS and if it was
IFR or VFR, I said VFR and they didn't ask any further questions about
that. They also looked at the dataplate on the plane. They asked how
many hours I had and then just some small talk for about 10 mins. They
asked at least two or three times about where I was flying to next. I
think they were mainly checking to see if I was flying Part 135 or
doing an illegal charter. The weather was 5 miles vis. and clear, but
very hazy. They did ask if I knew if the weather was going to get any
better. I suppose they were checking to see if I had checked the
weather. They were both very nice and the whole thing was pretty
painless.