Compete(dot)com Numbers WAY off

My complete numbers are way off my actual server logs and Google Analytics numbers. I have over 60k uniques but compete is showing only 2k.

What types of traffic does compete like? Has anyone else seen compete numbers being this far off?

Any help would be awesome.

Compete numbers are always off for smaller sites. They measure traffic by projecting final numbers from a cross-section of 2 million web users that have opted in to be tracked. This will always create problems for sites that don't have the reach to be statistically projected accurately. The larger a site's reach the more accurate compete.com will be.

Also, iirc, compete.com only monitors US users.