A few notes:
+ A 4.8MB download
+ Does not index cached web pages
+ No https indexing
+ No local info/search terms sent over the web
+ Will index MSN Messenger material
Also, you can view a couple of intereviews with the MSN Toolbar Suite team here.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.