Script to delete non-active profiles

Hey all, I'm trying to cobble together a script that will delete non-active profiles, and here's what I have so far:

$userfolders = gci c:\users\ | select-object name
$qwinsta = get-rdpsession
$activesessions = $qwinsta.username
$compare = compare-object -includeequal -property name $userfolders $activesessions

The "get-rdpsession" cmdlet can be found here

Anyhow, output ends up looking like this:

name                                                    SideIndicator                                         
----                                                    -------------                                         
                                                        =>                                                    
                                                        =>                                                    
                                                        =>                                                    
                                                        =>                                                    
                                                        =>                                                    
                                                        =>                                                    
Classic .NET AppPool                                    <=                                                    
Public                                                  <=                                                    
s10772n                                                 <=                                                    
s11428n                                                 <=                                                    
s11761n                                                 <=                                                    
s11949n                                                 <=                                                    
s13364n                                                 <=                                                    
s13699d                                                 <=                                                    
s13923n                                                 <=                                                    
s14929n                                                 <=                                                    
s16612d                                                 <=                                                    
s16612d		                                        <=                                                    
s16612d                                  	        <=                                                    
s17450n                                                 <=                                                    
s17754n                                                 <=                                                    
s18539n                                                 <=                                                    
s18718d                                                 <=                                                    
s18732n                                                 <=                                                    
s19064n                                                 <=                                                    
s20072n                                                 <=                                                    
s20286n                                                 <=                                                    
s21079d                                                 <=                                                    
s21286n                                                 <=                                                    
s21306n                                                 <=                                                    
s21378n                                                 <=                                                    
S22002D                                                 <=                                                    
S22002D                                                 <=                                                    
s22164n                                                 <=                                                    
s23090n                                                 <=                                                    
s23156n                                                 <=                                                    
s23529d                                                 <=  

As you can see it's not showing any matches, despite the values of $userfolders and $activesessions to contain two matches. I'm guessing those variables are containing more than text, and I'm thus comparing unlike things?

Thanks.

zarberg@gmail.com