Art and Science of Expert Judgement and Decision Making (Analysis, Forecasting, Predictions, Valuation and Estimates)

For anyone who is interested in analysis, forecasting, prediction, valuations and estimating and predicting in systematic, logical and rational way, with regard to the past present and future, i.e., having good judgement.

Weapons

For weapon experts and enthusiasts to ask Questions and get Answers about any type of weapon, from ancient edged weapons and archery to guns and modern tactical or strategic military systems.

Railways and Railroads

For railway enthusiasts, modellers, preservationists and others interested in railways & railroads, both full size and minature, including subways and other specialised rail-based systems

Numismatics

For coin collectors and enthusiasts.

Drones

For hobbyist drone flyers, racers and builders (all types)

Comics

For anybody interested in comics or animations, including graphic novels

Algorithmic Competitive Programming

For coders who participate in programming competitions like Google Code Jam and Topcoder Open. These require solving a problem and submitting it to be judged automatically on secret inputs. More here: ...

DIY

For everyone who likes to make gadgets by themselves as a means of recreation.

Stamp Collecting

For people who collect and study postage stamps, meter marks, and other philatelic matter.

Woodworking

For professional and amateur woodworkers.

Firearms

For hunters, target shooters, personal defense carriers, gunsmiths, gun enthusiasts, and all other firearms questions.

Sports

For participants in team and individual sport activities.

Amateur Radio

For amateur radio enthusiasts.

The Great Outdoors

For people who love outdoor activities, excursions, and outdoorsmanship.

Bohurt- Full Contact Medieval Combat

For fighters, Marshals, Armorers, Weapon makers