As you know some brokerage firms are no longer sending their listing feeds to streeteasy. However individual Brokers and Agents at these firms are free to upload their listings to the site. Absolutely make sure your broker/Agent is doing this.
Despite the disputes that some firms are having with streeteasy, they are still the most searched website for New York City real estate. If your home is not listed there, you're missing out on millions of eyeballs!