TranslatorsTranslatorsIn fairness, the more honest sites don't overpromise. Services like Worldlingo.com and Alis Technologies' Alis.com make it clear that they're only able to provide, at best, the gist of the meaning--not a bona fide rendition. Indeed, a whole new term, "gisting," has emerged to describe the rough and often hilarious results of machine translation. Alis has even given its service the clever name "Gist-in-Time" translations.
Lingo24 
Offers a collection of free online multilingual translation tools, and offer a pay service for larger projects
Babelfish Translator
An instant translator from AltaVista. Allows you to type in some text or the address of a web page and get a translation - might not be entirely colloquial, but will certainly give you a good idea of what it's
all about.
WorldLingo
Not only a translator service but also a translator box to add free to your website.
Alis
Translate online.
Dictionary.com Translator
Translate online.
Welsh Dictionary
Translates English to Welsh, and Welsh to English.
Welsh Translators
The Welsh Language Board have a list of translators and some very useful advice and guidance. Their page of Welsh
Language Computer Resources is excellent - everything from how to get the circumflex accent on 'w' and 'y' to Welsh spellcheckers, Welsh language signs for shops and bilingual web design
resources.
Language Export Centre
Based in Swansea, provides a comprehensive range of language/export related services & training for business.