Not directly. But I assume you should still be able to build your listings here, hit "Get HTML" and plug them into eBid's listing page. Then you could still host your photos here, use the supersize feature, etc. But you wouldn't be able to post or schedule from here.
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 .