Facebook impressions don’t actually make much of an impression on users, according to a Reuters and Ipsos poll released in June 2012. Only 1 in 5 American Facebook users say they have ever bought a product or service due to advertising or comments they saw on Facebook. This research comes on the heels of AP-CNBC survey results released in May which found that 83% of users rarely if ever click on ads or sponsored content on the site. On a more encouraging note, though, 18-34-year-olds are 40% more likely than the average to have been influenced by a Facebook impression to make a purchase. Data from a new Inside Network Research report indicates that this demographic makes up 44% of Facebook’s US audience. Read the rest at Marketing Charts.