>much traffic from Mirago
Very little, although they were providing some of the results for ask.co.uk which could bring reasonable traffic if you have the number 1 rank. Had a quick peek at ask today at it seems they no longer use mirago, will check some logs to see if this is permanent.
>any idea on the algo's for them
The highest word density imaginable, particularly in the meta tag area. Take a look at the source of this page [loan-line.co.uk] [number 6 for loans]. Wow ;)
They would be an ideal candidate for a keyword stuffed noframes section.
On many occasions they give a number 1 spot to sites whose domain name match the keywords entered. I would also be wary of analysing the top ranked pages too much, there may be some <cough> favours being granted.
>only to submit index page
They do spider the whole site.
They are doing a bit of advertising in the Internet magazines etc and are on my submission list.