BUZZ-Cellcast: Up sharply on rumours of talks with Google
** Media firm Cellcast (LSE: CLTV.L - news) up about 14 pct on rumours linking it to Google (Xetra: A0B7FY - news)
** Stock trading at more than 35x its daily avg trading volume and top gainer among media stocks on the junior AIM market
** Co denies press speculation that Google was in advanced talks to use its internet telephony technology, but does not specify where the rumours originated
** Cellcast spokespersons not immediately available for further comment
** Co provides message processing systems for emergency, public service, and point to multi-point mobile marketing messaging
** Stock rises as much as 81.8 pct, sharpest rise in a single day since May 2008, until just before co's announcement (RM (LSE: RM.L - news) : esha.vaish.thomsonreuters.com@reuters.net)