I have been ignoring a strange problem on my Google Analytics reports for ages - there are strange legitimate banking or government websites that are showing up as referrals to my site.
These strange referrals bring very small amount of traffic to my site, but it doesn't make any sense because they will never ever link to my website.
These referrals have legitimate referring page urls, they are not porn links or scam pages.
Anyone has any possible explainations on why these strange legitimate sites ended up as my referral?
p/s: Another observation - one government website that shows up as my referral regularly is a legitimate site that is very related to the nature of my site. It is a site that my site visitors will frequently visit as well. But neither I put a link to that gov site nor they put a link to my site.