Machynlleth's official Town Council Site is at http://www.plasmachynlleth.co.uk. Their meeting minutes are usually posted on this site (except when they forget), but if you want to keep up with what's going on in Mach, click on the Council drop-down menu and select "Minutes".
http://www.machynlleth.eu/ - although not updated very frequently, this website has some very useful information relating to plans for improvements to the town's facilities. Well worth a look from time to time.
http://www.machynlleth-today.co.uk/ITW/index2.cfm - has a search facility for latest Mach news - hosted by the Cambrian News.
http://www.countytimes.co.uk/ - and now rival newspaper, The County Times, has caught up with an improved search site of their own, which is easier to navigate than that of the Cambrian News.