Symptom: Attempts to access www.google.com using Lynx result in the error, “Google Error Bad Request” or “400 Bad Request”.
Cause: Some Linux distributions ship with a large /etc/mailcap or ~/.mailcap file that Lynx is using to send a huge Accept: header and google doesn't like it.
Fix: In /etc/lynx.cfg, edit
"GLOBAL_MAILCAP:/etc/mailcap" to "GLOBAL_MAILCAP:/dev/null" or "PERSONAL_MAILCAP:~/.mailcap" to "PERSONAL_MAILCAP:/dev/null"
as appropriate (depending on which mailcap file is causing the grief).