As Drexel noted a couple days ago, the Titans had visits from a couple veteran defensive backs, seemingly looking to bolster their depth at the position. Today, they did just that, signing one of the visitors, Tye Hill. Per Adam Schefter, it's a one year deal.
Hill was a first round draft pick of the Rams out of Clemson in 2006, and spent the first three years of his career with the Rams before being traded to the Falcons at the start of the 2009 season for a late round draft pick. He played in 8 games for Atlanta, starting three, and had his fifth career interception. One downside of Hill is an extensive injury history, as he spent 20 games on the shelf between 2007 and 2008. As I mentioned in the comments, the reviews I heard of Hill's play last year from Falcons fans were not positive, but will note in his defense that the Falcons' pass defense last year looked a lot like the Titans' did, with minimal pressure and poor safety support.
The worst case scenario is Hill ends up like DeMarcus Faggins did last year and doesn't make the roster. It's not a signing I'll get too excited about, but another veteran cornerback was something the Titans needed last year and didn't really address until the Rod Hood signing after the year already began. Even if Hill is merely veteran depth, going through OTAs and training camp will make him a better fit if called upon to play.