I have gone through and deleted all accounts which have not been used in over 6 months (180 days). I have also deleted all accounts which have been registered for at least 3 months (90 days) but which have never been used to make a post. If this affected one of your accounts, I encourage you to re-register it, and become more active in the future. User contributions help to enhance and enrich the community at Susan's Place.
Basically, I feel that inactive usernames should be available for people to register that will actually use them.