The market for online panels is maturing fast within the UK and there are now a plethora of options available to researchers. Many agencies are wrestling with dilemmas over whether and/or how much more to invest in an online panel. At the same time, many in client companies are beginning to realise that running their own online panel (or buying online field and tab), can result in substantial cost savings. This workshop provides a guide through the maze of determining how best to work with online panels with information about the latest options and opportunities.