The Swiffer WetJet is incredibly easy to use.  It is lightweight and works for an easy spot clean.  However, it does not scrub, needs multiple cleaning pads, the refills don't last long and neither do the batteries.  You can not refil the cleaning solution with your own, you have to buy theirs.

I found that for a quick clean it is ok, but since I purchased the Hoover Floor Mate I don't even bother with the WetJet.  And for little spills, I just grab a sponge.  The WetJet also tends to leave the floor sticky after cleaning.