As most of you would be knowing, display network performance is being shown on keyword level nowadays. Does this indirectly imply one can use broad match modifier + symbol to keywords on display network?
For example, earlier if I was bidding on keywords like mechanical jobs and engineering jobs, now will I be able to bid on +mechanical jobs, +engineering jobs etc? This will prevent my ads to get displayed on pages with closely similar keywords like electrical jobs, machine tool jobs etc and I would prefer this way because I know these 'closely similar' keywords are not going to contribute to my ROI.
In case if this works, this will help me to increase the relevance of pages where my ad will be displayed and the process will be much easier than adding negative keywords.
Google ignores match types on the Display Network.
You can exclude sites or pages within a site that are not a good match by visiting the Display Network tab and reviewing the auto or managed placements your ads are being served on (Use the See URL list feature). If you identify pages that are not a good fit exclude them on the spot. You can also use the site and category exclusion tool at the bottom of the Display Network page.
suggest you keep it somewhat narrow too, 5-25 keywords - the keyword granularity isn't super crisp like search, it's still thematic in nature, they've just figured out how to tag a single keyword as being the most relevant kw to that page's contextual matching action.
also, on neg keyword side, keep it slim. first 50 negs are used, again not perfectly crisply. more than 50 negs, it randomly picks out 50 to apply.