When a user dont answer to a lot of question and all the default answer is: Prefer not to say... it count for x % if another user also have the prefer not to say answer on his profil... so user can have a 95% match because both dont answer to the question about profil info.... this should be corrected.... at least to tell to server that if a user choose no option... so its the blank or default answer... this should not count into the % match...
thx