Whats the best way to automatic geotagging feeds

here are the options that I have found:

ttp://www.geonames.org/rss-to-georss-converter.html to be lacking accuracy ..and are looking into Drupal + Geoparsed (Andrew Larcombe http://geoparser.andrewl.net) also http://superfeedr.com offers a cloud based feed aggregation service that can add a location based on a place names and other data and convert feeds to pubsubhub-realtime.

I think Simple Geo and MetaCarta also have this technology but charge per document processed

if you have any suggestions please let me know...

Thank you for your time