Bloggers - be warned! Back up your data, you never know when Vista will turn on you!
Our two year old laptop has returned, striped of files saved carelessly on desktops and in public folders. Our lovely tech has advised the saving of files onto thumb drives and CD's thus settling a month long argument between husband and I over what method was best. Apparently saving files on an external hard drive is not recommend because if it corrupts, all data will be ruined. Husband won that round. I concede by way of blog post.
Also, don't buy software online - you won't have a backup to reinstall (duh!) and the software maker just may decide to stop making it - like Microsoft Money.