A false etymology is "an assumed or postulated etymology that current consensus among scholars of historical linguistics holds to be incorrect." The internet has provided a platform for the rapid spread of some false etymologies - Snopes has posts debunking Picnic / Handicap / Buck / Crowbar. On the other hand, a folk etymology can mean "the process by which a word or phrase, usually one of seemingly opaque formation, is arbitrarily reshaped so as to yield a form which is considered to be more transparent." Other interesting anomalies of etymology: backronyms and eggcorns.
Ten years ago Valve released Half Life, to the delight of gamers, modders, critics and people who hate cut scenes. Marc Laidlaw, writer for Valve, talks about the genesis of scientist turned crowbar wielding survivor, Gordon Freeman. Somehow avoided playing it in all these years? You can buy it on Steam for less than a dollar until midnight November 21st.