As you know, one of the features of the Translate extension is the aid of machine translation services. https://www.mediawiki.org/wiki/Help:Extension:Translate#Features The http://wiki.apertium.org/wiki/Apertium_web_service should provide valuable machine translation suggestions for the released language pairs, among which several Spanish languages which seem active enough e.g. on https://wiki.gentoo.org/index.php?title=Special%3ALanguageStats&x=D&language=es At translatewiki.net we don't use it because we have too much translation traffic, but it will probably be ok for you. To enable, it should be enough to get a free key at http://api.apertium.org/register.jsp and set $wgTranslateTranslationServices['Apertium']['key'] = '$KEY'; in your config (https://www.mediawiki.org/wiki/Help:Extension:Translate/Configuration ).
Created attachment 379182 [details] http://apy.projectjj.com/listPairs Update: I'm told you can instead use the instance at apy.projectjj.com, which requires no keys either. To verify that it's alive, try wget -q -O - "http://apy.projectjj.com/listPairs"
Tried this a while ago, with not too much success. If you want me to try again, please find me in #gentoo-wiki on freenode.
