Bloglines subscription stats? Just check your httpd access logs.

We were chatting about tracking more accurate feed subscription stats after work the other night, and I made a mental note to poke around my httpd server access logs (thank you Dreamhost for making that so easy). So I’m paging through yesterdays 20MB access log, when the user-agent string for the Bloglines bot catches my eye:

Bloglines/3.0-rho (; 7 subscribers)

Whut? That prized information, the number of people Bloglines is redistributing my feed to is right there! Ok so it’s not exactly an API. And when I started looking through the user-agent strings, I discovered that there was a wide variance in how these web based aggregators reported their subscribers. Here’s a sampling:

NewsGatorOnline/2.0 (; 5 subscribers)
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1; Rojo 1.0;; Aggregating on behalf of 3 subscriber(s) online at Gecko/20021130
kinjabot (; 1 Readers)
YahooFeedSeeker/2.0 (compatible; Mozilla 4.0; MSIE 5.5;; users 1; views 1)
FeedLounge (, 1 subscribers, next refresh in approx. 28800 seconds (; for; 1 readers)
AttensaOnline/1.0 (; 1 subscribers)

Wouldn’t it be nice if there was a standard? Something like:

X subscribers;

The rest (as far as I could tell), were just regular individual requestors. Or web-based aggregators that hadn’t jumped onto the custom user-agent bandwagon yet, *cough* Google *cough*.

Feedfetcher-Google; (+

With a little bit of moxie (grepped the access logs, regular expression formatting in EditPlus, analysis in Microsoft Access) I can say about 190 people subscribe to my feeds. Which is surprising to me. Here’s how it breaks down visually for my info-porn fans.

Feed Aggregators Pie Charts for April 7, 2006

Apparently Google Desktop is a force to be reckoned with. I had more of these in my logs (coming from unique IP addresses) than any other aggregator:

Mozilla/4.0 (compatible; Google Desktop)

And I had no idea Google Desktop included a feed reader.

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