PDF is a read-only file format that's specifically used for the Adobe Reader application. Because you need the Adobe Reader app to view PDFs, some websites, such as LinkedIn, don't allow PDF files to ...

From housing contracts to business deals, PDFs seep into just about every area of the internet as the official document format you need to get things done. But sometimes using the popular format means ...

Typically, autoresponders offer paid services to companies that send bulk emails or newsletters to subscribers. In order to use the advanced functionality of these services, you must pay a fee, ...