We've been running online computer resale, repair and recycling companies for a number of years and throughout the whole period, the most important (and I can't stress this enough) part of the operation has been the protection of personal and corporate data/ information. This cannot be stressed enough. Everything from replying to emails to surfing the web and recycling/ disposing of your computer exposes you to fraud and identity theft.
The most overlooked portion of a computer's life is that of its disposal and the protection of the data on its hard drive. Skipping or binning your computer without first thinking about the safety of your personal information is simply crazy. It's like throwing your credit card in the garbage bin without first cutting it up.
Wiping your own data is the best option and software like dBan offers the best and most secure way of doing this. The other option open to you is to remove the hard drive and take a sledge hammer to it. For corporates, computer recycling usually costs money and if it doesn't, the service most certainly involves resale for export, where information may be accessed on other continents- well outside the shores of your parent country and the laws that protect a company's rights. Remember, if in doubt, ask. Look for a level of professionalism and a service from your chosen recycling company designed to ensure client retention.