Seems like a few people have become quite attached to Search, so i'll try to help you learn to live without it until we get it back online again :)
Replace "username" in the areas below with the username of the diary you want to go to.
Firstly, you can go directly to any diary you like as follows:
http://username.deardiary.net
Alternatively you can go directly to the newest entry someone has written as follows:
http://www.deardiary.net/show/diaries/username/newest
Make a new folder in your Favourites for diaries and diary entries, then whenever you see a diary or entry you like, bookmark it.
That's all I can think of for now - if you have a question about how you can still do what you need to without Search then ask and we'll see if we can come up with an answer - hopefully this has answered your questions Rosebud?
Matt.