That link is probably a mistake. All brokers, media, yahoo,.sites etc, use data web crawlers set to key words. Many times the key words will overlap and return unrelated combos... happens many, many times on Ihub and the otcbb and other media outlets....this link looks very much as a mistake.
Actually, that's not completely true.
The site builder will add specific keywords in the META tags of a webpage. Search engines will then send crawlers to look for these keywords in the META tags and in order to categorise specific webpages based upon search returns. SEO (Search Engine Optimisation) companies will contract with, Google, for example to better place their clients in a higher page rank.
Equity Feed, although not creating links manually to external data sources, usually have a script that looks for new data; in this case, new filings from Edgar or whatever the source. How BBOS comes up when you click only on this link is pure mystery.