I think that is a nice simple way of linking to general information and outside sources that are not used as references. It is certainly 1000 times better than unsourced info. I also agree that copying and pasting another sites content should be avoided.
I would still personally prefer a liitle more detailed citation for specifc details in case a link becomes broken or the information changes, and also that sources that are specifically referenced be included in the sources list in a more 'bibliographic' style as well as <ref>referenced in the text</ref>
As an example I use a lot of links to the Canadian Census Data hosted by Library and Archives Canada and I try to always include the link to the census page or person but I also give the actual reference to the Enumeration District, Sub-District, Division, and Page in case they reorganize the page links (as happened recently)
Although I admit I do not do it consistently, when I link to wikipedia content I try to at least include what the wikipedia article was titled and the date accessed. Example [http://en.wikipedia.org/wiki/Christian_Theodor_von_Pincier
Wikipedia] entry: Christian Theodor von Pincier (accessed 30 June 2013)