Touching the author of the currently open blog opens another copy
Touching the author of the currently open blog opens another activity showing the same blog.
There are two ways we could handle this: replace the current activity if the author is the same, or replace the current activity in all cases (so that pressing the back button once takes us back to the combined feed, however many blogs we've browsed through). I can see arguments for either solution and I don't mind which one we choose.