There are so many good ones out there, but my current daily reading list includes these:
Log of s/v Del Viento: Well written and thought provoking blog of a family cruising the Pacific and U.S. West Coast.
Sailing Wondertime: Crossing the Pacific with two young kids, reminding me often of my own family.
Windtraveler: A couple (and recent newborn) cruising the Caribbean, offering gear reviews, advice, tips, stories, etc.
Zero to Cruising: "Fun loving couple" cruising the Caribbean on a catamaran. Great photography!
WaveTrain: SAIL Magazine editor Charles Doane writes his uncensored thoughts and opinions.
Sail Far Live Free: How could I leave my own blog off the list?