Yeah, that is in 6/8 rather than 3/4. They do both have 6 eighth notes in each measure, but the distinction lies in where the accents fall and where the chords change.
As far as 6/8 goes, that's a good one for that meter.
The basic difference between 6/8 and 3/4 are where the pulse lies:
If you can feel the eighth notes (the +'s) with 3 main pules per measure, then it's 3/4, but if you feel it grouped in 3's (ONE two three) then it's 6/8. With 3/4, the beat is still divided into 2's.
X____ X____ | X____ X____ |
1 2 3 4 5 6 | 1 2 3 4 5 6 |
X__ X__ X__ | X__ X__ X__ |
1 + 2 + 3 + | 1 + 2 + 3 + |
The distinction is very fine though, and you can borrow rhythms freely between the two meters for interest.
As a general tendancy, rock and pop songs tend to be in 6/8 while jazz pieces in 3 tend to almost always be in 3/4. The reason jazz tends to be in 3/4 is because the eighth notes in jazz are swung, and therefore are a primary feature of the groove, so in 3/4 that swing feel is retained, but with one less beat per measure.
Anyway, it basically comes down to the beat being divided into 2 for 3/4 or 3 for 6/8.