Window fetish perhaps? I have a lot more windows picture in my hardisk. Just couldn't find them.
Why this fetish? Too eager to find out what's behind those windows?
Babes changin' clothes? Bulgary? Rave party Inside, nerds outside? Lovers doing what they usually do at night, on bed?
Psst! I am a Windows supporter. Mac users, shooo shooo ... (just j/k)
(Source: http://www.techniphotomart.com(Learn Professional Digital Photography))