I am a new member. I have received several e-mails and when I click on them every one has said the link is expired. I am clicking them only hours after receiving them. Any ideas?

Sounds like you're either clicking the ads to 200 which expire very quickly or getting emails to 500 which were originally sent a few days ago.

I write down the time I am doing the ads each day and do them 10 or more minutes later the next day. But I still get the "you have already visited this site". I can understand this if it is a 500 or dated ad but I am talking about the daily ads. I click on them and, if a search ad, do a valid search for no money just to support the site and the advertiser. But how long is the time between ads before they become live again?

Due to a glitch in the server, the lock doesn't release for an additional 2 hrs after the time it's supposed to so the lock on 24 hr ads are set for 22 hr.