A womans age

So I am in my late 20s and have really enjoyed the type of people I have been meeting so for on eH (granted there are a lot of duds to weed out). Most of the men I have met with are in the 33-38 age range, which is in line with the ages of most of my friends.

I'm trying to talk one of my girlfriends who is 38 into signing up. She is in great shape, sucessful, smart, funny, educated, etc, etc. Overall, she is mature but does not look or act her age (she could pass for 31-32ish easily).

Last night one of the men we were out with who has also enjoyed being on eH was telling her to sign up but say she was 5 years younger than she really is. He is a doctor and in his mid 40s if that matters.

She wants to date more, but wont sign up for eH because she doesnt want to lie about her age and her friends who are 38-40, but also are like her in that they look and act younger have had little luck on eH. She says that men discount women in her age range even if there are great pictures and a good profile.

What should I tell her? Ladies would you lie about your age? Men, what would you do if you met a beautiful, smart, funny, established woman and found out later that she took 5 years off of her age on her profile? Also, men who are in their late 30s early 40s, would you pass over someone who was 38 if you still wanted to have kids?