I just logged in to the site and when I first clicked a link I got a message that I already have reached my limit for the day, why?
There are several different reasons that it would happen:
It hasn't been 24 hours after you have logged in the last time and the counter was not reset for you. In this case you have to wait until it is 24 hours after your previous log in.
To find out when your last log in time was, go to the 'My Account page.
You have a web-surfing accelerator active on your computer or your browser have that feature (usually called pre-fetching or offline browsing). In that case you must turn it off otherwise you'll always get that message.