@AndreSilva the orange button is an RSS feed (en.wikipedia.org/wiki/RSS) for which you'd normally use an RSS reader / aggregator to read (along with a bunch of other feeds).

Such used to be very common, but most of them died out after google reader (en.wikipedia.org/wiki/Google_Reader) became popular. Google reader was then discontinued, leaving support for RSS aggregators a little thin on the ground (though some do exist). In addition, some browsers provide the ability to read RSS feeds (e.g.)

Hello everyone. At TU Eindhoven (NL) and UC Davis (US) we are conducting an academic study about user support for R on r-help versus StackExchange (StackOverflow and CrossValidated). Would you be interested in participating in a user survey (purely academic, no commercial interests whatsoever)? Context meta.stackoverflow.com/questions/189299/… Survey ow.ly/nbrfU

@Glen_b. Thank you very much.

FYI to everyone, I just rejected several suggested edits to tag-wiki excerpts that were copy-and-pastes from the wikipedia page.

It appears that they would be acceptable if there were updated to include a link to the original source (although I think the first sentences for degrees of freedom and effect size are pretty vague IMO anyway). Splines should have something related to why they are of interest to statistics.

@AndyW I think you show good judgment with those remarks. I would only like to add that what we really want to see in the wiki excerpts is information to help people decide whether or not to apply the tag to their question. In many cases that would not be a definition; it would be pithy advice about how the tag is intended to be used here. Generic Wikipedia definitions often are not specific enough to serve that purpose and sometimes are misleading.