User blog comment:AnitaTotallyRocks/Underaged Users/@comment-26209257-20140812161321/@comment-20644-20140812181852

That's a good practice to follow. In addition to it being a way of respecting peoples' privacy, it's also in line with the Terms of Use. As the TOU say, you agree not to use Wikia to:


 * "Post or transmit any communication or solicitation designed or intended to obtain password, account, or private information from any Wikia user;"

and


 * "Solicit personal information from any user under the age of 18;"

So in general, you shouldn't be asking people for their ages.