In theory possible if you can access to your pogoplug via webdav, sftp, … any supported external storage. However, free or very cheap webhosting services come with very little power and then accessing through a third connection with possibly slow upstream, I wouldn’t do that. If you still use this at home and want something, use a cheap hardware device at home and connect the storage of your pogoplug.
I would first try a local setup in a virtual machine, if you manage to set it up with your pogoplug and if you are happy with it.