It's a first rate source
Primarily because it gives references and yet summarises the science in easy to read articles.
So it's evidence based medicine that is accessible to everyone.http://www.kellymom.com/evidencebased.html
The site owner is Kelly Bonyata
Kelly Bonyata, BS, IBCLC
Kelly is an international board certified lactation consultant (IBCLC), and a member of the International Lactation Consultant Association and the Florida Lactation Consultant Association. She is a summa c*m laude graduate of Mercer University, with majors in mathematics and physics, and previously worked in the field of environmental assessment and remediation.
Kelly has been helping mothers and babies to breastfeed since 1997. She provides private and telephone consultations, teaches breastfeeding classes and leads support groups, writes articles on breastfeeding and parenting, and speaks on breastfeeding topics to parents and professionals. Kelly has many years experience counseling mothers via the Internet through mother-to-mother support boards as well as serving on the lactation staff of a pediatric expert forum, DrPaula.com.
Kelly is the owner and originator of kellymom.com, an internationally recognized website providing breastfeeding and parenting information to professionals and parents. She stays up-to-date with the latest research on lactation, infant nutrition and infant development so that she can provide parents and professionals with the most current information available.
She also has articles written by other IBCLCs, organisations like LLL and the ABA and doctors.
Other breastfeeding websites often have topics clumped in one article, or are difficult to read. I find the pages at kellymom could have been written to answer the questions people ask. For example the low supply page and the your fussy four month old pages should be in my sig, I link to them that often. But they get simply and directly to the point, and the information is correct. What more can you ask for?