I've got two PR4 directories open for submissions. Cost varies from the directories, but here they are: www.pmdip.org www.titannetwork.biz Also selling permanent links on these directories for a permanent link on both directories: $10. Also permanent featured link for $20. These must be ordered via PM or in the link sales section where I've got a thread.
Deep links are extra links to internal pages of the submitted site provided for submissions. There are MODs for phpLinkDirectory to add the support.