Go to http://stackoverflow.com/questions and add "C#" and ".NET" to questions tagged. This action returns questions with both tags in them. I would like to be able to filter by either tag (or logic).
Is this a user error or new feature request?
There is no way to automatically join interesting tag searches with OR operator. Since I only have two interesting tags for explicitly this purpose, I would enjoy such a feature.
For now, you can still do it manually through the URL. Example for you to use: http://stackoverflow.com/questions/tagged/c%23+OR+.net