I was on another forum, in an IT topic, and someone mentioned the idea of when a temp agency asks for the month and day of your birth and the last 4 of your SSN, that is enough info to determine your age.
***EDIT CORRECTED. MONTH AND DAY, not month and year as in what the 4 posts below this one are responding to***
And therefore, age discriminate against you for hiring.

Possible? It might explain partially why I have had such a hell of a time getting jobs I am VERY qualified for this year.
They went on to say they give a DOB that implies they are 25, and 0000 for the last 4 of the SSN. Not sure if that makes sense, because agencies ask for month and day only, but this got me thinking.
I'm not OLD old, but I am not a "fresh faced, mindless, ready to take on the world" naïve 22 year old college graduate either. I have enough years of life experience that employers aren't going to intimidate me like they would a 20-something.
I'm past the prime hiring age, let's put it that way. I look younger than I am, and have been told this from many people, so once again, as I have stated in other forum posts, telling the truth is not in my best interests.
I just checked my resume. I had removed my college graduation date some time ago, so I am ok there. Nothing on the resume can show my age.