Because that’s exactly what Sidekiq and Crossengine do. They both offer similar ways to search using many different engines. You only have to choose one search engine from the menu and switch to others on the fly. This way, you can easily and very quickly find anything imaginable about a subject, whether it is a document, picture, video, download or anything else.

Both sites use a sidebar. Crossengine let’s you even choose between top and side layout. It also has few quick shortcuts for the most visited sites like Wiki, Youtube an so on.

You would spend tens of minutes by searching for the content on all of those sites manually one by one. These two search engine aggregators may bring the results quickly in and speed up your work.