Micke, to the rescue! I just removed you from the SCoPE seminar discussions area. I'm glad you asked the question because others may be wondering the same thing.
There are a few ways to manage your participation in SCoPE.
1) Managing participation in each seminar discussion
The SCoPE Seminar Discussions are set up with the "subscribe initially" option. This means that you will receive forum posts by email if you have your email account enabled on the site (see #3). To unsubscribe, or to subscribe via RSS, go to the forum list. You can also manage this by opening a forum and clicking "unsubscribe me from this forum" and/or clicking the RSS button. #1 is a common choice for members because they like to be reminded that a new seminar is starting up, then decide at that point if they want to participate.
2) Managing participation in the scheduled seminar discussions group
You can chose to leave the SCoPE seminar discussions group altogether. Click the "unenrol me from SCoPE seminars" link either on the main group page, or from your profile. (Access your profile by clicking on your name anywhere it appears on the site.)
3) Turning off email subscriptions altogether
In your profile click the "edit profile" button. There is a pull down menu beside "email activated". You can select "This email address is disabled. You will not receive email from the SCoPE site." You'll also see other options in your profile, like digest. All forums are set up with RSS, including the MicroSCoPE newsletter.
I hope this helps! BTW, we never use the "subscribe forever" feature here in SCoPE.