Manual Traffic Exchanges, Clickthru and WebmasterQuest, for example, have remove the automation by requesting users to either rate sites or click on a specific graphic after a specified period of time has elapsed, forcing its users to view the web sites in the rotation.

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How much value these sites have in respect of quality traffic, however, is arguable. That said, both Clickthru and WebmasterQuest are well worth a visit as they both offer many, many other addition functions and means to drive traffic to your site.