Moms age 25-54 with at least one child and who actively participate in online activities make up an astounding 20% of all online activity, according to a new report (pdf download) from Nielsen Online.  They are extremely active in social networking, not only for communicating with each other, but for conversing and advising about brands.

The report breaks the “Power Moms” down into two age categories.  “Established Moms,” ages 40-50, trend heavily toward shopping online (as well as submitting ratings and reviews), while “Newbie Moms,” ages 25-40, tend to use social networking sites like Facebook on a daily basis.

Established Moms gravitate to online shopping destinations where they are likely to be receptive to highly relevant promotions to allow her to indulge herself while saving on her family’s needs,” said Jessica Hogue, research director, Nielsen Online. “However, marketers shouldn’t rule out the rising prominence of social networking sites among this cohort, which is one of the fastest growing demographics on Facebook.”

If you are working to strengthen your online presence, this report (which can be downloaded through the “new report” link above) may be a guide to help prioritize your list of “to do’s” to create the right customer experience for your customers.