Jury still out on Autoroll blog widget

That little widget is designed to add to the traffic to a blog. There's no point in blogging if you aren't hoping for traffic, after all. And this little thing is context sensitive in some manner and shows blogs that people should like to go to from your blog, and shows your blog on other like minded souls' blogs.

Anyone remembering Webring (yes, it still exists) as a traffic creation mechanism will recognise Autoroll at once. Ok, let's look at performance (the huge gap below seems to be a blogger software issue, not my bad blogging):

Visits from other blogs (clicks)	Seen on other blogs (impressions)	Unique users visits from other blogs	Unique users views from other blogs	Unique user click ratio
3	3875	3	2659	0.113%

So far it doesn't look very good, does it? But it is free. And that also leads to a question: "What is their revenue model?"