Is it good to legitimize your online profile?

[Semper Fidelis]

like giving real DOB.

I just changed my DOB to real one on every profile, viz facebook, yahoo, gmail,etc.
Previously, over the concerns of data leaks, whether intentional or accidental, I didn't share the real one.

I am legitimizing mainly because I want the visa processes to go smoothly.
I have no idea about visa forms of countries, and don't know how can they check our profiles if don't provide the links.
I have no idea about visa forms of countries, and don't know how can they check our profiles if don't provide the links.