@Snoopy, what browser are you using? Some browsers don’t have tabs, or it may be accessed a different way. The basic concept of my method is that you have your main window open to your Activity page, then you click on each of the “Stop Following” links with either shift-click or your middle mouse button (in Firefox and possibly some versions of IE). This will open a new window or tab, and in that tab the webpage will communicate with the server and remove it from your activity. But you don’t want to pay any attention to the pages that pop up once you click on the “Stop Following” link, you just want to keep clicking “Stop Following” for each of the questions on that main Activities page, then once you’ve reached the end of the page and removed all the activity from the section, reload that page. That will cause the data to reload, all the activities you had stopped following in the new windows will not be there anymore, and you can keep going with removing more activities.
Every now and then you can restart Firefox to make all those open tabs go away. Just make sure to say NO to saving your state, or say NO to restoring your crashed session, or else all the pointless Activity tabs will come back!
It’s a bit harder if you don’t have the tab functionality, but still possible. You will end up with many instances of the Activities page each in a different Internet Explorer window. Don’t close them all manually – you can kill the root executable and all the windows will close. To do this, go into your Task Manager (control-alt-delete), go to the Processes tab, find “iexplore.exe” (if you sort by memory usage, it will be very close to the top, because of all the windows you have open, or you can simply start typing iexplore and it’ll find it on the list), and click the “End Process” button, and say yes to any prompts that come up. This will totally kill all running versions of Internet Explorer, thus closing all of your open windows.
This is a bit of a hard thing to explain in words if you’ve never mucked around with Task Manager, but I’m confident you can figure it out :)
As a sidenote, I did make a request for this feature when I provided some feedback to Ben about the iPod Touch version of the website (and was quite tickled pink when he actually implemented something I wanted! The ability to see your lurve history on the iPod! Yay!) I can understand why it doesn’t exist – if I had designed Fluther, I wouldn’t have thought a user would be answering so many questions to make such functionality worthwhile. Alternatively, I might have assumed the user would decide upon answering each thread whether to eliminate it right then or keep following it. And one last thing, such a functionality is irreversible (if the database and programming are set up in the easiest and most logical way, that is), so if someone accidentally clicks on it, POOF, their neat and tidy following page is toast, with no way to get it back. This can be mitigated by putting a “Are you SURE you want to do that?” popup, but there will still be the user who doesn’t mean to, and no way to undo it.