We don't have an exact estimate for how many Spaces bloggers will move over to WordPress.com in the next 6 months, but in the first 48 hours we've completed close to 50,000 blog migrations which is very promising. We'll keep you posted on our progress Harry.
- Paul Kim, VP User Growth, Automattic

More music recommendations, please!

Dan: I work for Automattic, the company that runs the WordPress.com hosted blogging service. Your headline is in error. WordPress.com has NOT been "hit by redirecting scripts that point users to malicious websites". As noted by commenter Les, your final sentence also refers to the WordPress.com service, not standalone WordPress.

No, you won't.

VaultPress is meant for independently hosted blogs initially. Backups will get stored across multiple cloud services.

Not yet, but when it is set you'll be able to get pricing information over at http://vaultpress.com.