Thanks for helping to bring this to our attention. We have received several other reports of this nature and our engineering team is working to get the issue resolved as soon as possible. I will update this thread when additional information on this issue becomes available.
It appears these error messages were occurring due to a hiccup with a little site update we pushed out to fix an issue that was causing the "Custom Item Specifics" link not to show up for some categories. We are not seeing these errors any longer so you should now be able to create and post listings again without receiving these errors.
Please let us know by contacting our customer support team or posting to this thread if you continue to receive errors of this nature.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .