Under Settings -> Profile when you scroll down to “My extended profile” you see the setting “Visibility of your extended profile:”. The options are only “Limited” or “Public”. Please add the ability to check any or all of your Aspects, instead of the “Limited” option.
This is needed because, in order to “follow” someone, you need to add them to an Aspect. And, just because you are adding them to an Aspect, you may not want to share your Extended Profile with them.
I know you can just follow hashtags, but that is not always desirable. Sometimes you just want to follow a particular person.