Copyscape

Copyscape is dedicated to protecting your rights online, helping you fight against online plagiarism and content theft. Copyscape finds copies of your content on the Web. You can use Copyscape to identify sites that have copied your content without permission, as well as those that have quoted you. Simply type in the address of your original web page, and Copyscape does the rest.

Google Suggest

Google suggest can dynamically suggest keywords for you as you typed. Someone diseccected the codes that is used in Google Suggest (Google Suggest Digested)

Online resources for use cases

Web development mistakes

Interesting list of common web development mistakes made by web tier developers.

Firefox - Autocomplete

Now here’s a nice feature just checked into the Mozilla Firefox source tree that everyone wants - deletion of autocomplete results (bug 171605). There’s always the odd occasion where you want to just remove a certain entry, but don’t want to have to clear your browser history (and consequently lose everything else that you want to keep). How does it work? Just do a Shift-Delete when the autocomplete result you want is selected.