Here's another way: bookmark and set the name for "Share on Facebook" and the URL:
javascript:var d=document,f='http://www.facebook.com/share',l=d.location,e=encodeURIComponent,p='.php?src=bm&v=4&i=1274665734&u='+e(l.href)+'&t='+e(d.title);1;try{if (!/^(.*\.)?facebook\.[^.]*$/.test(l.host))throw(0);share_internal_bookmarklet(p)}catch(z) {a=function() {if (!window.open(f+'r'+p,'sharer','toolbar=0,status=0,resizable=1,width=626,height=436'))l.href=f+p};if (/Firefox/.test(navigator.userAgent))setTimeout(a,0);else{a()}}void(0)
Note. I did not invent this method, and I donβt remember where I got it from, but it works great for both Chrome and Firefox. (I have not tried this in other browsers.)
EDIT: I found the source: https://www.facebook.com/share_options.php On this page, just drag the Share to Facebook icon on the bookmarks bar.
source share