Fletcher Penney has rewritten and expanded the functionality of the blosxom writeback plugin with his writebackplus. He says it should be a drop-in replacement for writeback, seewritebacks and recentwritebacks. So far so good. He purports it to have better handling of the combined email/url field that so bedevils writeback leavers, records IP addresses, has anti-spam comment measures and generally is an improvement. Thus far, I know that it seems to work with my old writebacks. We'll see how it works with leaving new ones.