I have a full time job and don't want to talk to schedulers on the phone either. I work completely with e-mail and use the job boards. To get a longer list of potential assignments, sign up with more companies. I am signed up with 150+. Many posters here are signed up with more than that.
To find information about a particular company, click "Search" on the line above the list of topics. You can search for a thread on many companies by clicking "search," typing in the company's name, and selecting "all dates." There's a great list of companies to sign up with at the bottom of the page, the blue link, Official Mystery Shopping Companies.