Apple Working on Allowing the Merging of Multiple Apple IDs
Apple is reportedly working on a process to merge multiple Apple IDs into a single login. Early developer testing of iOS 5 and iCloud have demonstrated that this issue was major.
TUAW described the problem back in July, and the answer at that time was that there was no way to consolidate Apple IDs:
Some readers have been managing two Apple IDs on purpose and are now frustrated about the fact that Apple is restricting logins for automatic downloads. Others have only just discovered that they have two IDs. Most of them have already contacted Apple, only to be given the same answer without exception: Apple will not consolidate Apple ID accounts.
MacRumors reader Robert emailed Apple CEO Tim Cook about the issue. Apple representative said that they understood the issue and that more people would run into the problem with iCloud, claiming that there is no way yet to combine accounts but revealed they are working on it.