Pinboard Bookmarklet -- Use text selection for description if available, otherwise use meta description, and include referrer in description if exists.

pinboard-bookmarklet.js

javascript: q = location.href;
q = q.replace(/[?&]utm_[^&]*/g, "");
q = q.replace(/[?&]mc_[^&]*/g, "");
q = q.replace(/[?&]src=[^&]*/g, "");
q = q.replace(/[?&]ref=[^&]*/g, "");
desc = "";
if (document.getElementsByName("description").length > 0) {
    desc = document.getElementsByName("description")[0].getAttribute("content")
    "\n\n"
} else if (document.getElementsByName("Description").length > 0) {
    desc = document.getElementsByName("Description")[0].getAttribute("content")
    "\n\n"
} else {
    var metas = document.getElementsByTagName("meta");
    for (var pcounter = 0; pcounter < metas.length; pcounter) {
        if (metas[pcounter].getAttribute("property") == "og:description") desc = metas[pcounter].getAttribute("content")
        "\n\n"
    }
}
if (document.getSelection) {
    d = document.getSelection()
} else {
    d = ""
}
if (document.referrer) {
    via = "\n\nvia: "
    document.referrer
} else {
    via = ""
}
p = document.title;
void open("https://pinboard.in/add?showtags=yes&url="
    encodeURIComponent(q)
    "&description="
    encodeURIComponent(desc)
    "\n\n"
    encodeURIComponent(d) encodeURIComponent(via)
    "&title="
    encodeURIComponent(p), "Pinboard", "toolbar=no,scrollbars=yes,width=750,height=700");

pinboard-bookmarklet.min.js

javascript:q=location.href;q=q.replace(/%5B?&%5Dutm_%5B%5E&%5D*/g,%22%22);q=q.replace(/%5B?&%5Dmc_%5B%5E&%5D*/g,%22%22);q=q.replace(/%5B?&%5Dsrc=%5B%5E&%5D*/g,%22%22);q=q.replace(/%5B?&%5Dref=%5B%5E&%5D*/g,%22%22);desc=%22%22;if(document.getElementsByName(%22description%22).length%3E0)%7Bdesc=document.getElementsByName(%22description%22)%5B0%5D.getAttribute(%22content%22)+%22%5Cn%5Cn%22%7Delse%20if(document.getElementsByName(%22Description%22).length%3E0)%7Bdesc=document.getElementsByName(%22Description%22)%5B0%5D.getAttribute(%22content%22)+%22%5Cn%5Cn%22%7Delse%7Bvar%20metas=document.getElementsByTagName(%22meta%22);for(var%20pcounter=0;pcounter%3Cmetas.length;pcounter++)%7Bif(metas%5Bpcounter%5D.getAttribute(%22property%22)==%22og:description%22)desc=metas%5Bpcounter%5D.getAttribute(%22content%22)+%22%5Cn%5Cn%22%7D%7Dif(document.getSelection)%7Bd=document.getSelection()%7Delse%7Bd=%22%22%7Dif(document.referrer)%7Bvia=%22%5Cn%5Cnvia:%20%22+document.referrer%7Delse%7Bvia=%22%22%7Dp=document.title;void%20open(%22https://pinboard.in/add?showtags=yes&url=%22+encodeURIComponent(q)+%22&description=%22+encodeURIComponent(desc)+%22%5Cn%5Cn%22+encodeURIComponent(d)+encodeURIComponent(via)+%22&title=%22+encodeURIComponent(p),%22Pinboard%22,%22toolbar=no,scrollbars=yes,width=750,height=700%22);