I've found that almost every county in the US I've checked, court records (sometimes including traffic citations) are available online to the general public by the court.
I went looking for information for someone I knew. I was able to pull up records on her in 3 states, including a speeding ticket and a ticket for a burned out taillight.
The problem is, the citations and arrests are easy to find. Digging through the court records to find the final disposition of the case is frequently difficult or impossible. For example, I could find that you were arrested for say possession of drug paraphernalia. The arrest record is usually a booking photo, list of charges, and some personal information. It doesn't say that the "paraphernalia" was actually a cigarette lighter and sandwich bag (with no drugs or residue), and that the charges were dropped.
Despite remaining innocent until proven guilty, a charge or arrest is a conviction in too many people's minds. They believe "If you were arrested, you must have been doing something wrong".
IMHO, court records without convictions, or even with convictions and time served, are far worse than a picture posted by an ex. All the later shows is, ya, you did have intimate relations with someone in the past. By the time you're 20-something, we've all had intimate relations.