Extending/Renewing a Session?

I am away from home right now and have been reduced to relying on Free Wi-Fi spots for my Internet access.

A lot of places only give you a Session for a predetermined amount of time before things expire, and you have to log back in, which is a REAL PAIN!!

This always seems to happen while I am trying to submit a post to SitePoint - and so I lose all of my message - or when I am listening to a Radio Countdown Show and it is #2 and things die on me and so I miss some or all of the #1 song?! :mad:

Is there a way to trick their systems and…

1.) Renew the Session automatically?

2.) Delete the current Session when I want (e.g. Delete the Session during a commercial and start a new one during a commercial break)?