Turning off search by username isn't going to have much effect on reducing the server load. Why ? Because more searches will be required to track down the thread being looked for. Turning off search by username will not stop people from finding post by specific other users. Why ? Now that text searching within the post text is back, find ing a thread with a specific person in just relies on there being a post with the required username in the text (e.g. "Thanks whoever"). Expect to see "bookmark" replies with mutiple keywords that include a username. What most people do when searching is try to narrow the results as much as possible. A lot of the time you can remember a important participant in a thread and being able to filter by that criteria is important. There's been no mention of Booleans or other advanced search syntax planned, which again would greatly enhance our "Searching Experience".