Well they do, and you should go there and see if you're owed money.

There are over 24,000 names and close to $11.5 million in cold hard cash as well as shares in stock

There can be a large payday for some, as mentioned in an article in the Unionleader.com,

The largest claim in recent years was $1 million paid from a bank account the recipients never knew existed. "Shrewd investments by someone who, as he got older, lost track of those investments,He passed away and those shares were transferred to the state and subsequently sold, and the family came forward."

There is no statute of limitations on claiming the abandoned property, as long as the claimant can provide the right proof.