Postbacks can be annoying. Especially when you have a long page of content with a form at the bottom and on button click causes the page to skip back to the top of the page.
For a user who is not used to a site, this can be incredibly annoying and disorientating simply due to the fact the page has moved to a different position. This isn't so much of an issue if you happen to have a webpage that is low on content and a form will always be in clear view.
ScriptManager.RegisterStartupScript(this, typeof(string), "PostbackFocus", "window.location.hash = 'feedback-form'", true);
By placing this code in your Page_Load method, the user will be taken to an anchor point placed within the page. In this case, a <div> with an ID attribute of "feedback-form".