You can update your profile from your homepage. Just click Edit my profile link in your homepage and you'll be able to edit all sections of your profile. You can edit it by parts pressing Edit for different profile sections.
You can hide your profile in your account page. There's a special link to do it. Also note, if you hide your profile, it won't show in search for other users but your friends (in your friends list) will be able to view it and contact you.
Your profile shows you to other people, lets to understand your intentions, dating preferences and much more! If someone looks at your profile and there's not much there, why would they contact you? Even if you're a very attractive person, people won't be interested so much as they won't know who you are.
Don't forget to upload photos and videos to get more matches and views for your profile! Identify your likes and dislikes! Find your life partner as fast as you could with a fully filled profile!
If you go to My Account page and press Membership termination link, your profile will be deleted from a site and you'll have to register again to join the community. That's why we advise you to hide your profile if necessary and contact administrator when you want to change your membership or terminate an account.
You can go to Edit profile from your home page to see the status. Every profile section shows per cent of section completion so you can follow the data. Also, at My profile page you can view general profile completion per cent.