It is interesting how a lot of these exoplanets are in very tight orbits around their star. Maybe our instruments are biased to short orbits and we will find some longer orbits over time, but still, a lot of these planets orbit in only a few hours or days.
While I get the basics of how they do the search, I still got to think there is a lot of crap in interstellar space between our scopes and a planet 33 light years away.