Do Ads Expire?

Great question. The short answer is yes - ads do expire.

Longer answer:
The parameters on each campaign are set by the advertisers themselves. Here are just a few examples of parameters that advertisers may set on a campaign to determine how their ads behave:

1) Budget. Each advertiser names the price for each offer (minimum is $0.20) and exactly the budget for the entire campaign. When the budget is spent, the campaign is suspended. The advertisers may then fund it back up, or kill the campaign and start a new one.

2) Calendar days. Advertisers set a Start Date and an End Date for each campaign.

3) Frequency maximums. Frequency is defined as "how often the same MeFile will receive the same ad/offer". If an ad has been set with a frequency max of X, the same MeFile will only be offered to collect on the offer X time(s) maximum. So if a MeFile has received and accepted the ad offers X number of times, they will no longer receive ad offers from that campaign.

4) Click-frequency controls. Further, advertisers can protect themselves from rapid-clickers by creating campaign parameters that withdraw or put an ad offer on "snooze" for any MeFile that appears to be clicking in rapid succession. The effect for the advertiser may sound like this - I really want this type of MeFile's attention, but if they have clicked on X number of ads in the last Y number of minutes, withdraw my offer until Z hours have passed. XY & Z are determined by the advertiser to their own comfort level.

There are a few other factors that determine the behavior of ads, but hopefully that provides a picture.

Regarding the number of ads to expect during any period, we are posting a response to that frequently-asked question here.