This is more of a question for Google Groups then for me. So I asked them, or at least read their FAQ, which says, amongst other things, that they only index groups that are officaly added and approved by the usenet community. They link to the news.newusers.questions FAQ on creating new groups. I'm not willing to take the time to deal with the long political process it describes, though I'll be happy to offer assistance, and rename the groups when required. (The process, BTW, is only slightly shorter and less political with alt.* groups.)

OTOH, groups.google.com indexes a number of perl mailinglists that are not offical newsgroups under the perl.* hierarchy, so they may be amenable to pulling from my humble server as well. If you want to explore the avenue of asking them humbily, be my guest.