The best of today's Mom blogs.

• Should there be an age limit on trick-or-treating? Notes From The Trenches wonders how old is too old.

• How many baby costumes can you make with one baby sling? Nine, says Boston Mamas!

• Blogs: The New Support Group? Cindy at Loving a Soldier, Living the Life says her online community is an integral part of her support system: “I really love reading what other military wives are going through. It makes me feel better to know that I'm not the only one.”

• Finally—some new ways to fight childhood obesity! Dr. Gwenn discusses recent advances in the battle of the playground bulge at Pediatrics Now.