Our site start to rank on MSN and YAHOO at the most related 4 competitive keywords however 3-5 daily visitor Wink from them.

If those were appearing on Google then we must recieve 3-5k daily.

Do people not using MSN and YAHOO for searching something?

Does anyone have any clue about how many searchs being daily at the YAHOO, MSN and GOOGLE.

I was just reading an article the other day and the author made a comment on how "MSN was useless" ...I was thinking "no it isn't" I get traffic from their all the time...than I looked at my logs for past month and had just over 1000 referrals from google, 800+ from yahoo and 56 from msn.

Conclusion "MSN is worthless"

In comparison to Google the referral of yahoo and MSN is less but it is not cont less. my site google referral daily is 150 and yahoo 90 and MSN 65..
but after launching Bing MSN search is increased.

I looked at my logs for past month and had just over 1000 referrals from google, 800+ from yahoo and 56 from msn.

depends on the industry. In some industries I saw many visitors from Yahoo and Bing.