These are events that have been announced to the Poly Boston announce mailing list. You may also want to check out the Family Tree calendar of events; for information about any of those events contact Family Tree at <ftree@contra.org>. The best way to hear about Poly Boston events in a timely fashion is to subscribe to the mailing list.
In general, you should contact the person hosting the event by email for directions or more information. If there’s no contact email address specified for an event, you can send me mail (again, at <js+poly@aq.org>) and I’ll try to put the host in touch with you.
You may also want to check out Family Tree’s calendar of events. A number of them, but not all, are also listed below.
WARNING: Sanity-check times that show up here. Some people have reported times being displayed incorrectly (several hours off the actual event time). I think I’ve fixed that problem, but if you see the discussion group listed as starting at 11:30pm or something, that's incorrect.