I messed up in a big way yesterday. I was trying to install a new template and it all went very pear shaped. Ended up with a load of widget placeholders with nothing in them. Have been working hard to get everything back to normal today and waiting for some instructions from the author of the template to correct whatever I did wrong.
Next time I'll play with one of my other blogs that only has a few widgets to mess up :-(
The biggest regret was losing all the list of blogs I read regularly and really like. I'll get them back piecemeal, but the first one to get added to my new list is actually a new (to me) blog I found while on Linkreferral today.
Enjoy this http://myretirementchronicles.blogspot.com/