An example of the type of information that you will find is this snippet on my paternal great-granduncle.
Name: Elvin Cooper Lemaster
[Elvin C Lemaster]
SSN: 317036832 Gender: Male Race: White Birth Date: 9 Jul 1912 Birth Place: Salamonia Ja, Indiana Father Name: Luman C Lemaster Mother Name: Barbara I Wehrly Death Date: 16 May 2000 Type of Claim: Original SSN. Notes: Apr 1937: Name listed as ELVIN COOPER LEMASTER; 24 May 2000: Name listed as ELVIN C LEMASTER
From this detail, I have his birth date and place as he filled out the Social Security application, as well as the name of his parents. The notes section is the most interesting - the date of April 1937 would have been when he applied for his SSN, and the notes also show how at his death there was a name variation in their records.
This database is too new to suggest hints yet, so I'm searching by surname and location. In this instance, a search for Lemaster in Jay County, Indiana is giving me hints to any Lemaster who applied from there or listed it as a place on the applciation, and in some cases I've been able to find clues to married names for some of the female members of the family.
The searching is getting quite addictive, and I've been able to add several individuals and birth/death information to my database.