To return to the point of view put across earlier in this thread that rural Welsh-speaking Wales is traditionally conservative, I would argue, as someone who grew up in Ceredigion, lived in Cardiff for 10 years and recently moved back to Ceredigion, that this is a very outdated and inaccurate view. To my knowledge, for example, Ceredigion has not returned a Tory MP in living memory (and probably far beyond), and was in fact one of, if not the first seat in Britain to have an MP returned on a partly Green Party mandate (Cynog Dafis, who won the seat in 1992 on a Plaid Cymru/Green Party ticket). Ceredigion and other rural counties' earlier loyalty to the Liberal Party, was the product of the enduring legacy of the nineteenth century radical/Nonconformist alliance, which produced such great figures as Henry Richard from Tregaron, whose ideas on pacifism and improving relationships between nations/avoiding wars are about as far from conservative as can be imagined.
The success of the deal Plaid struck with the Greens reflects the fact that environmental activism and 'green' ideas have been particularly influential in both rural Ceredigion and Powys since the early to mid 1970s. This is due in part to the fact that the lifestyles and ideas associated with hippy culture were accepted from a very early date in these areas, hence the success of the Centre for Alternative Technology since the mid seventies and the generally friendly and harmonious relations between local people and the 'hippies' who were attracted to move to rural Wales for a number of reasons. From personal experience, I can vouch for the fact that culturally and politically rural Wales has been and is, in ways that are not perhaps immediately obvious, a hotbed of alternative ideas and actions e.g. some of the huge free parties/raves held in the area, Operation Julie, the development of the Welsh Language movement (which again is often mistaken for a conservative movement when it was and is in fact a positive, active affirmation of the importance of cultural diversity and of the rights of minorities to live as much of their lives as they choose in the language of their choice in the face of globally homogenizing, mainly economic, pressures), Transition Towns (of which Lampeter is one of the first), and many other environmental initiatives in the Machynlleth area.
Another myth repated in this thread, which flies in the face of social reality in Welsh-speaking Wales, is that Welsh has ever been a dead language. The Welsh language movememt which emerged in the sixties developed in order to address the fact that Welsh speakers had very few legal rights, which made their efforts to reverse the decline in numbers speaking the language virtually impossible. Ordinary, everyday actions and issues such as writing a cheque, birth certificates, wedding registrations, driving licences, road signs etc could only be done officially, or were only available in English. Each of these rights had to be won individually through concerted civil disobedience and direct action which involved both younger and older generations, and was arguably the clearest manifestation of the spirit of the Sixties global protest movement in Wales.
To me, these actions were heroic, as they have ensured that I and other born since the seventies have been able to use a language which has been around for a very, very long time throughout my education, up to and including post-graduate level, in my working life and socially and culturally through Welsh language tele, films and pop. Interestingly, the idea of Welsh-speaking Wales as being conservative is again undermined by the music and ideas which have come out of the Welsh language music scene e.g. John Peel's faves Datblygu were from Cardigan and were v left-wing in an uncompromisng and iconoclastic way, Ffa Coffi Pawb (the band which the Super Furries emerged from) were similarly very out there and radical from the name itself onwards, same goes for the Gorkys. As for new Welsh words being hatched in some sort of academic laboratory, again there's very little, if any evidence of this. New Welsh words emerge in the same way as they do in any other living language - through a comibnation of experimentation, argument, discussion and useage by speakers themselves, followed by official recognition in dictionaries etc.