Our Customer Service team can deactivate your account if you wish, and you can send your request that they do so via the link below.
However, keep in mind that there's no charge for your account, and you may want to keep it if you want to search for rental or sale listings in the future. If there's a specific reason you wish to deactivate your account, please let our team know so they can assist you. For example, if you simply wish to stop receiving Trulia email alerts, you can delete those alerts via http://www.trulia.com/account/email_preferences/.
I hope this information is helpful.
Consumer Care Advocate