In Texas a Class C misdemeanor is the lowest offense category and in punishable only by a fine and not by a jail term. For comparison, a Class B misdemeanor can result in incarceration in jail for a period of up to 180 days along with a fine.
One benefit of this is that officers will be able to issue tickets for these offenses rather than making a custodial arrest. You can imagine that this will reduce the time and expense for police departments in making an arrest. Let's say you run across a hippie in a tie-dyed T-shirt smoking a joint on a park bench. The officer can write him a ticket and send him on his way in 10 minutes rather than being out of service for an hour or more while you arrest him, drive him across town and then book him into jail.
Another cost saving in making this change is enumerated in the article:
Removing jail time from the punishment spectrum relieves the state from providing legal aid to defendants who can't hire an attorney on their own.
A hat tip to Scott Henson over at Grits For Breakfast for a link to the story.