http://Google.COM/groups?selm=Jeff_Relf_2007_Oct_4__1_49_A3@Cotse.NET

If you know the Message-ID of a post,
e.g. ??? news:Jeff_Relf_2007_Oct_4__1_49_A3@Cotse.NET ???,
you can link to it like this:
  http://Google.COM/groups?selm=Jeff_Relf_2007_Oct_4__1_49_A3@Cotse.NET
  
However,
Google sometimes won't recognize a Message-ID younger than 3 days old.

If you use ??? Search Engine Plugins ???,
you can add a ??? Message-ID lookup ??? by typing this into the URL bar
( it must be a single line, hit ??? Go ??? twice ):

??? javascript: ( function() {
    window.external.AddSearchProvider(
      "http://www.cotse.net/users/jeffrelf/MessID.XML"); } )(); ???.
  
FireFox 2.0 won't install a .XML file if it's not UTF-8 encoded,
I discovered, nor can it be loaded from a hard-disk.
Also, it won't load if the ??? image height ??? isn't 16.

MessID.XML is just:

??? <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
  <ShortName>Message ID Lookup</ShortName>
  <Image height="16" width="16" type="image/png">
    http://www.cotse.net/users/jeffrelf/X.PNG</Image>

  <Url type="text/html" method="get"
    template="http://Google.COM/groups?selm={searchTerms}"/>
  </OpenSearchDescription> ???.
..+.+.+