Blair Henry Frank did a fun writeup about PMOG for MacWorld Magazine, the October 2008 issue:
Looking to add some spice to your mundane Web-browsing life? Then check out the Passively Multiplayer Online Game (PMOG). Produced by GameLayers, this free extension for the Firefox Web browser puts Net surfers into a massively multiplayer online role-playing game (MMORPG) -- all tied to their normal browsing habits_ For each new Web site a player visits in a day, he or she earns datapoints, PMOG's currency, which the player can use to purchase a variety of useful items. In addition, PMOG offers six major associations, each with its own perks, and user-created missions -- chains of Web sites linked by a common thread. The combination of all these elements produces an experience that will never let you look at Web browsing the same way again (pmog.com)