Zynga arranged a $1bn line of credit before their IPO which they said specifically was for acquisitions... who else could be in their sights? I have never before seen a more logical, obvious and well signalled marriage which has not been reflected in the pps...its an enigma for sure.
Screw Zynga. If GLUU is bought I'd rather it be by Activision or privately held Valve Software. IMO Valve would be the best fit b/c of Valve's electronic distribution engine, aka "Steam". Both companies are cutting edge and would be a great fit.