Only paying members can join fellowships and take advantage of all their features (internal tournaments, ponds, or stairs, private discussion boards, team challenges etc.). If a player's paid membership expires, he remains a member in all previously joined fellowships but cannot use any fellowship functions, until his membership is renewed.
(hide) If you only look at some of the discussion boards on a regular basis you can add them to your favourite boards list by going to the Board page and clicking "Add to my favourite boards". (pauloaguia) (show all tips)