Slideshare is a popular website that made sharing PowerPoint presentations (and PDFs) easy. Recently, the site added a new feature: support for Microsoft Word and Excel files. The move was likely due to Slideshare’s competition from sites like Scribd, DocStoc, Zoho Share, and others. If you’re wondering what the difference is between all these sites and the services they offer, I have to point you over to the Digital Inspiration site, where the news broke. There, blogger Amit Agarwal has put together handy charts for your reference which compare the features, file size limits, viewer sizes, among other things. He even compares the traffic of the sites – a comparison which shows Slideshare has a lot of catching up to do if they want to compete with Scribd!