If you used Google Maps in your projects as a developer, probably you faced with a problem to display huge amount of markers on the map. Problem seems more User Interface related, than technical. On small zoom it does not look good. I solved it using a very nice marker clustering library available from Google.
If you did not face with .live() handler before, this post is probably for you! It makes event handling code much cleaner and easier to use on heavily dynamic pages.
Nowadays jQuery become a very standard library used in in 90% of all projects. Simplicity of DOM manipulation with cross browser capability attracts all developers, from newbies to profs.
While developing AJAX UI with many forms nested in each other I faced a problem of not well written code, what was a real pain to modify.
I am going to tell how jQuery events saved my ass.