It should be possible to close and remove your own account from featurelist easily. The reason for deleting your account may differ; maybe you have only tried the service out and found that it didn't suit your needs; perhaps you have used it for a single, now completed, project, etc.
I any case, a function to close/remove your own account should be present, possible in the "profile" section.
I any case, a function to close/remove your own account should be present, possible in the "profile" section.