Search keywords from command line

@echo off
set keyword=%1
shift
set query=%1
:ADDSPACES
shift
if "%1"=="" goto %keyword%
set query=%query%%%20%1
goto ADDSPACES
:AMAZON
set url="https://www.amazon.com/s/ref=nb_sb_noss?field-keywords=%query%"
goto SEARCH
:GOOGLE
set url="https://www.google.com/search?q=%query%"
goto SEARCH
:MYANIMELIST
set url="https://myanimelist.net/search/all?q=%query%"
goto SEARCH
:NYAA
set url="https://nyaa.si/?f=0&c=0_0&q=%query%"
goto SEARCH
:VNDB
set url="http://vndb.org/v/all?sq=%query%"
goto SEARCH
:WIKIPEDIA
set url="http://www.wikipedia.org/search-redirect.php?search=%query%&language=en"
:SEARCH
start firefox.exe %url%