I send reports to my team every week of top visited web pages from anonymous leads. This is helpful for them for prospecting certain companies, if given in the Inferred Company field. You'll have to do some work filtering out ISPs from this report, since there are a lot of them. Also, you'll need to filter out certain countries that don't apply to your business (from the Inferred Country field).
Anonymous web page data is deleted automatically from Marketo every 90 days. I also let the team know how many anonymous leads are visiting the site every month.