http://forums.groundspeak.com/GC/index.php?showtopic=218388

 Alternate Logging Requirements No longer allowed.

So Any cache listed as a ? with Alternate Logging Requirements needs be altered or archived because "You must find and prove you have found 40 caches on a Friday" is now changed to "come find my cache, sign the log and claim a find"

 Please make sure you note the changes to the guidelines dates April 2009:

  1. A section called Logging of All Physical Caches has been added to the guidelines.
QUOTE
Geocaches can be logged online as Found once the physical log has been signed.

If it is appropriate for your cache location or theme, you may ask the cache seeker to accomplish an optional and simple task, either close to the cache site (normally within 0.1 miles or 161 meters) or when writing their online log. For example, wear the goofy hat inside the cache container and upload a photograph. Cache finders can choose whether or not to attempt or accomplish optional tasks. Cache owners may not delete the cache seeker's log based solely on optional tasks.

This guideline change applies immediately to all logs written from April 4, 2009 and going forward. Older caches with "additional logging requirements" (ALRs) are not grandfathered under the older guideline. If you own an existing cache with mandatory additional logging requirements, we request that you: