John (Smith), I think that is close, but not quite. The account merging that is being discussed is not adobe forum and macromedia forum, but forum ids and adobe.com logins. In the new system, we will login with our adobe ids, not our adobe forum (or macromedia forum) ids.
Following are excerpts/paraphrases from John Cornicello's posts 15, 39, and 42 from the following link. And, John (Cornicello), thank you for all the help and information you are providing. I hope I stated the current information correctly.
http://www.adobeforums.com/webx/.59b7e284/38
My changes are in []s
> If you don't link your login [so that the login for the forums and adobe.com are the same,] all of your messages that get moved from this [forum] system to the new one will say they were posted by "Guest" and you will be starting anew. If you link your accounts your old messages will have your name attached to them in the new system. It is your choice.
> On Friday [2/13, the permanent cookie] was disabled ... [because] if we didn't turn off the cookie folks not logging in would [not be prompted to associate their forum and adobe.com accounts and would therefore] ... lose all their old content.
> I don't know yet [whether the cookie change to session cookies will be permanent and if not, when they will change]. I think it really depends on how many users go through the account migration/association path. In the two or three weeks before the cookie changed only 96 people configured their accounts. Since Saturday there have been about 1900. So, from that point of view it appears to be working.
> I can tell you that the security folks are happier with the session cookies because of the situation of people using shared computers (libraries, etc.) and not remembering to log out.