Genealogy in Time Magazine provides comprehensive monthly compilations of newly-available online resources - these cover numerous countries. Separate cumulative listings, covering from 2008 up to June 2016, are provided for England & Wales, Scotland and Ireland.
Wales Lookup Exchange
Surname Navigator Single (free) searches of multiple online databases, including;- CGI & Ancestral File (LDS Mormons); Google; Google News Gen; Rootsweb Message Boards; 1881 census; Ancestry Com.
Surname Profiler Project "A recent research project based at University College London (UCL) has investigated the distribution of surnames in Great Britain, both current and historic, in order to understand patterns of regional economic development, population movement and cultural identity. This website allows users to search the databases that we have created, and to trace the geography and history of their family names......."
Welsh Surname List - an all Wales surnames list provided by John Ball on his Welsh Family History Archives site.
Wales Surnames Listings - provided by UK Surnames
Timeline of genealogically interesting dates by Gareth Hicks
Here is the text of a Guide to Welsh genealogy produced by Daniel Parry, and an account of the problems of using the IGI for early Welsh records.
The BBC's family history site
John Ball's Welsh Family History Archive provides some very useful material and links for those with Welsh ancestry.
Researchers may be interested in the Wales GenWeb pages.
Details of upcoming United Kingdom and Ireland Genealogical Events (GENEVA).
Pedigrees and Coats of Arms in Wales. A Data Wales site
There are a variety of genealogy mailing lists covering the counties of Wales, for details see Genealogy Discussion Groups