Microsoft Unveils New Communication, Blog Tools  SEATTLE (Reuters) - Microsoft Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=MSFT.O qtype=sym infotype=info qcat=news"&gt;MSFT.O&lt;/A&gt; unveiled on  Wednesday a new set of Web-based services allowing users of its  MSN service to publish and track each other's blogs, or online  journals.