Review for Google Blog Search by Will Bueche
Rated 4 out of 5 stars
Useful, but the orange 'B' icon implies that this only searches Blogger (since that is the icon for Blogger). In fact the search is for any and all blogs that Google's blog search function searches. So I'd recommend changing the icon to make it perfect.
To create your own collections, you must have a Mozilla Add-ons account.