It turns out that there are very few services for which this is the case (imagine if you had to log back in to everything every time you switched wifi networks). Having said that, we have some innovative ideas for supporting the few services that have this restriction - stay tuned to http://blog.meldium.com for details.
So any service this works for (sans the manually integrated ones with service knowledge) should be highly suspect for security practices, as they are doing nothing to prevent session hijacking. You're basically offering Session Hijacking as a Service. That's rather genius.
I don't mean this to criticize you, one of the first scripts I ever sold was a better UI to a service that basically used Cross Site Request Forgery to do the work.
