I can't see anything on the Bad Behaviour site that mentions anything about blocking people who have the Alexa toolbar installed on their browser. Having the Alexa toolbar installed and it reporting usage data back to Alexa is no different to Chrome reporting usage data back to Google.
Actually have just checked some logs and it does look like the Alexa Toolbar may well show up in the User Agent e.g.:
Code:
"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; AlexaToolbar/amzni-3.0; GTB7.5; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 1.1.4322; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E; .NET CLR 3.0.30729; AlexaToolbar/amzni-3.0)"
But that said out of the 662,367 entries in today's log file only 357 lines contain "Alexa".
Code:
root@banana:/var/www/logs/***.co.uk# grep "" ***.co.uk-banana-access_log | wc -l
662367
root@banana:/var/www/logs/***.co.uk# grep "Alexa" ***.co.uk-banana-access_log | wc -l
357
I host a large recruitment website, currently handling about 1.2M human PVs per month (as measured by Google Analytics) and yes, robot and spider traffic is a heck of a lot more than this. For example I actively block all traffic from Amazon due to the fact that all I see from their network is automated robots scraping content. But I have never seen a way of blocking someone who has the Alexa toolbar installed and indeed, why would you? For example I saw that my Mother-in-Law had it on her laptop last year, it is installed by "normal" people (not including my MiL in that group of course

) and making your site inaccessible to them would seem like madness to me. Ban Alexa, Baidu, ahrefs, majestic12 and whatever if you think they are hogging resource but to ban end users for having the Alexa toolbar would be a bit mental as I don't think you can class someone who has it installed as being a "bad" user, a little naive maybe but not bad.
But I guess if DigitalPoint are blocking users with the Alexa toolbar then surely their site position would have dropped off the scale rather than just reducing slightly? Will have more of a look at Bad Behaviour when I get home as got to leave the office now.
Cheers for the discussion, have learnt a lot so far!