Comment 2 for bug 408765

People spend more time on other Web sites than they do on yours. On practically every other Web site, the control for submitting text that you've entered is a button, usually without an icon. There's nothing obviously wrong or confusing about this pattern. Therefore, the control for submitting a comment on Launchpad should be a button, and it doesn't need an icon.

There's an interesting confusion in Launchpad about what a link with a "(+)" button does: (1) add something immediately (e.g. "Subscribe") or (2) request further input and then perform an action (e.g. "Subscribe someone else"). That confusion should be fixed separately, but adding a third meaning -- (3) submit information that you've already entered -- is a backward step.