A nice little piece by Cory Doctorow, even if it is
archival and a little dated. Here's an excerpt which --while not really representative-- I found to be keenly observant.

,----
| Take eBay: every seller there has a damned good reason for
| double-checking their listings for typos and misspellings. Try
| searching for "plam" on eBay. Right now, that turns up nine typoed
| listings for "Plam Pilots." Misspelled listings don't show up in
| correctly-spelled searches and hence garner fewer bids and lower
| sale-prices. You can almost always get a bargain on a Plam Pilot at
| eBay.
`----

Metacrap