Vodafone’s share price rose Friday on rumors of a takeover bid by AT&T. We’ve so been here before — AT&T promised back in January that it wouldn’t launch a bid for the subsequent 6 months. China Mobile is also reportedly interested in buying a stake in Vodafone. On top of that, AT&T is also reportedly considering buying Ireland’s Eircom as a way into Europe, and Vodafone itself was rumored to be considering a bid for T-Mobile US, so y’know, it’s probably worth seeing what actually happens before getting too excited. One thing that has happened, though, is that Vodafone just stumped up $96 million to take over Greek fixed-line provider Hellas Online.