Described variously as "groups to discuss topics Setup mailing lists to stay in touch Search and access over 1 billion posts Send newsletters and plan group events" (Google) and "where people with a shared interest meet, get to know each other, and stay informed. Your group gives you instant access to Shared message archives, Photos and photo albums, Group event calendars, Member polls and shared links and best of all, it's free. (Yahoo) these Web locations provide infinite pleasure for people throughout the Internet world.
Inevitably the list of topics is long and becomes longer day by day but it includes Business & Finance, Computers & Internet, Cultures & Community, Entertainment & Arts, Family & Home, Games, Government & Politics, Health & Wellness, Hobbies & Crafts, Music, Recreation & Sports, Regional, Religion & Belief, Romance & Relationships, Schools & Education, Science and continues almost endlessly.
Both GOOGLE and YAHOO enable searches for specific groups from their home pages .
No such list would be complete without reference to military matters and that category itself to Royal Signals and indeed not surprisingly thence to Amateur Radio.
There is no intention here to publish a definitive list of these categories but as an appetiser and a take-off point for browsers interested in furthering their investigation of such Groups we offer: