Hey everybody, can anyone tell me how can i use frequency capping? from what i heard frequency capping it is the numbers of view per user per day. Many publishers limit the numbers of views for each user since the last impressions usually don't have much value. (Applying frequency capping usually lead to an increase in cpm (as well as decrease on traffic) how can i do that? what free services do you recommend? i think Open X does the job, but they didn't activated my account so far... any other way? probably a plugin for wordpress? as my sites are wordpress based.. thanks in advace