I just enabled profile in aBlazeNet, you can have some personal information, like a personal message, the location you are from, date of birth and Gender, the date of birth is not compulsory to help those who don't want to let know their age.
You can also, upload a photo of yours, 85 x 85 pixels, that can go along with the profile. The purpose is to know who you are. If you don't want to have a picture that fine just leave the place blank, but don't post silly stuff over there.
Regards