1) Fillers of sockets 2) Has a close look at 3) Looks over 4) Looks over closely 5) Peepers 6) Scopes out 7) Stares 8) Stares at, slang 9) They fill sockets Found on https://www.crosswordclues.com/clue/eyeballs
the aggregated published or acknowledged readership numbers for all content in which a brand or organisation receive published content. (See impressions, and opportunities to see.) Found on http://amecorg.com/2012/06/glossary_plain_speaking/
Advertising term. A name given to the number of people who visit a website advertisement, which can be counted by the number of click-throughs Found on http://www.encyclo.co.uk/local/22643