QUOTE(rpyrc @ Apr 24 2008, 12:26 PM)

I'm not sure I understand the implications of the 'paroled' versus 'pending'.
If an AOS applicant receives their AP, makes a visit to their home country, then returns within a short period of time, their AOS application is no longer 'pending'? Is it on hold or something until the applicant returns?
I guess what I'm asking is what are the practical implications on their application if they leave and return? Does 'paroled' have a negative connotation during the approval process?
I think you're getting two things confused here. In your immigration journey, there are two entities, you as a person and your legal status within the US, and your application for an immigration benefit.
Once you file for AoS with I-485, your status becomes "Pending Decision of the US Attorney General" and your AoS case status is pending.
Should you leave the country and return using an AP document, your personal status changes from "Pending Decision of the US Attorney General" to "Parole Status". Your application however remains "pending" because the USCIS still has not made a decision on the case.
The implications of you as a person being in "Parole Status" depends on what your status was before you left. Not everyone was in the status of "Pending Decision of the US Attorney General". Some where here with other visas and have since filed their application for AoS.
As far as I am aware, and keep in mind I am not a lawyer or an immigration expert, for those who entered on a K1 visa, submitted an application for AoS and then returned into the country using AP and subsiquently became "Parole Status" individuals, there is no real risk of any implications occuring. Your status as a "Paroled" individual allows USCIS and the US Government to take certain actions they would not be able to if your status was something other than "Paroled" but I don't know exactly what they are.
The very fact that I haven't read about anyone having problems using AP and being in the US in a "Paroled" status makes me think that its not really an issue you need to worry over, just something to be mindful of. Using AP is not risk free, but the risks do seem small.
Being in a status of "Paroled" does not have any impact on the USCIS decision to approve or deny your AoS application, as far as I am aware.