here's the page that gets you there. I keep my actual block bidder page (didn't want to post it here) under an "ebay" Shortcut in my links. Everytime i decide to block someone based on a thread here i just copy and paste their user name to end of my list on the block bidder page.
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Click on "Blocking a bidder/buyer"
No Way Out: Stimulus and Money Printing Are the Only Path Left