I'll echo cepheid's advice. I have a PDA, and when I complete a survey I write a note in the datebook for 10 days later. When that date comes I check my account statement to make sure it has posted. If it hasn't I send a message to their customer service with the link to the survey and a request that they post the $. They usually post it within a day or 2. So that's worked out very well for me.