Queue limits, multiple advert block

Well, when someone like ProBlogger arrives it inevitably highlights any bugs in the management of advert requests. In this case the poor guy got bombed with ad requests, including multiple requests from single users.

We hadn't really decided whether multiple ad requests were a problem before. It was one of the reasons people were rejecting ads, but at the same time it seemed managable and nobody was complaining. But 5 requests from the same person is just..a little silly.

So that's gone now, if you have an ad queued, approved or running on a given blog you can't submit further adverts. Later I hope to provide people with finer grain control of whether they accept multiple requests but for now we needed a solid solution. Feedback welcome.

In addition, we now have a "queued" limit, you can't have more than 15 entrecards queued at a time. This prevents someones mailbox getting too stuffed on their first day or if they're suddenly popular for some reason :)

I hope to make the blocks a little clearer soon - at the moment they're an error displayed if you try to advertise rather than preventing you from clicking the button in the first place.