Slightly off topic, but I usually do not give an accurate birthday on any online form unless there is a clear need for the web site to have the information.
I have a big concern about identity theft. I have had friends go through that and its an absolute nightmare so why make it easy by giving out pieces of information that don't necessarily add to the web experience but could be used for identity theft.
How do you know which web sites to trust?
I am surprised by the people on facebook who actually have their birth date and year visible for anybody to see.
I don't make myself younger. I usually make my birth month a few months earlier and even the day of the month is changed a bit.
Sometimes I add a year and make myself older.
In the end, my age year is generally correct or only off by one year (on the older side).
Check out CNN's article on Rapleaf, a firm that aggregates data on people on the internet. Between the privacy breaches at Facebook and other firms and the presence of companies like Rapleaf its just a matter of time before identity theft really takes off.http://money.cnn.com/2010/10/21/technology/rapleaf/index.htm
To some this may sound paranoid, but I would rather be safe than sorry.
Ask anyone who has experienced true and expensive identity theft. It can take months to sort things out and there can still be echoes years after the actual incident. Its very easy to ruin someone's credit score and extremely difficult to fix it.