Yes, these meetings are eligible for PDUs. Attendees report them under CATEGORY A: Courses offered by PMI’s R.E.P.s or Chapters and Communities (1 hr = 1 PDU). Presenters are eligible for PDUs for the time spent developing and presenting your material, which is reported under CATEGORY D: Creating New Project Management Knowledge and is subject to a limit per certification cycle.
WARNING: Make sure you sign the attendance sheet and get a copy for your records when it is posted on the group site so that you can prove you attended in case of an audit! Keep a folder of all activity documentation.
The following tips come from PMI. Bear in mind that if you attend a 1 hour Roundtable you are only entitled to 1 PDU and are still subject to any maximums required by PMI.