I work for ParentsClick Network and have for a several years. I am the maintainer of Content Recommendation Engine and the Similarity Objects module. I plan on actually using this blog for Drupal notes and news. I have added only one post at this time, but more will be coming. And any post will be tagged with the tag planet, so anything non Drupal oriented won't be there, though I don't think I will write anything non-Drupal/PHP
Closed: won't fix
Planet Drupal
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It's likely this issue predates Contrib.social: some issue and comment data are missing.