WordNet sense 1 (continue talking or writing in a desultory manner):

jog, ramble on

WordNet sense 2 (move about aimlessly or without any destination, often in search of food or employment):

cast, drift, range, roam, roll, rove, stray, swan, tramp, vagabond, wander

WordNet sense 3 (an aimless amble on a winding course):

meander