according internet research firm comshare, yaho had nearly 20% the primary search market last month, microsoft just or 8%. twe mbthcoo edalin tot ls the two mbined tal less lf of gole 65% share while microsofand yahoo companies argue their panership will be good for consumers and adrtisers, in separate video statements haed out to reporters, the e.o.'s made tir motives clear. >> right now, there's one compy that really dominates the worlwide market for search and online advertising the partnership we a nouncing today will help to eate a stronger number two a increase competition in the search area. >> yaho and microsoft the scale necessary to compete against ogle, which dominates re than 70% of all search. >> reporter: yah and microsoft have been dancg around the idea of combining foes for nearly three years that dance included a hoile takeover bid for hoo! by crosoft. under the terms of tay's ten year deal, microsoft wilsupply the search thnology used on yahoo! while yahoo! will handle sale to advertisers the companies ll share ad revenue. yahoo! says the parership willave operating