What is the difference between those two model links?

1 idea, Advertisers can pay to have their branded content be one of the first suggestions in a GIF search

Are timers expensive or something? It seems like having a constantly ticking (and calling back) clock would be more costly.

somethings wrong with your layout, on my macbook (13.3") on firefox i can't get down to the sample links, i had to make the text smaller

This would be cool as a bookmarklet.