Autoblogging?... I don't have any strategies from typos...
The problem with typo domains IMHO is that you will only get the traffic from type-in typo... That means you will get traffic if your website visitor type a typo directly in your browser search bar... I personally would not depend on typo for traffic since the search engines nowadays suggest a spelling alternative, also the web user would likely bookmark their favourite websites....
Maybe you could try this strategy, try to get as many traffic as you can from social bookmark, feed aggretators, etc. and monetize using adsense first THEN sell it to the owner of the good spelling traffic by searching the owner via whois... Example, you have cheapp.com, get as many traffic to cheapp.com, sell it to the owner of cheap.com.... You have to include the stats of cheapp.com as your selling proposition...
Hope that helps you...