This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Unfortunately, the software we're using doesn't support previews.
The ability to edit your posts is the next best thing. If you need to edit a post multiple times, just remember to remove the exiting [edited by..] tags each time. This way there will only be one edit tag at the bottom.
One tag isn't too intrusive but a whole bunch of them -- as you've mentioned -- is unsightly.