What's the reason behind waiting 60 sec between searches
 

Just curious.

Just a guess: searching requires a lot of resources from the server. If a lot of people were searching then the server could slow down significantly. That waiting period decreases the load on the server, so it can always run at its optimum speed.

when my dolt brain types in NEU do you know how many millions of gigabytes of posts that poor server has to check. I bet Mike has cups of ice by it, ill try to narrow them down LOL

The myracle of databases knows how to handle this quickly and efficiently. Don't worry the server won't melt that easily. It's when the bots start doing a million searches per minute that the server melts.