Can I limit how many results are returned?

Yes, you can! This is controlled at the data set level. A great use case would be if you want to see a "Top 25" list.

By default, each date set will pull up to 100,000 map results. To adjust the limit, go to the Map and select the data set in question. Click on the settings icon to the right of the drop-down. Select the Other tab. Limit is an option with Order By, which will help determine the sort order of your records.