A bookmarklet is a small piece of javascript code used as a bookmark. This one will let you post to %%site.name%% simply by selecting some text on a page and pressing the bookmarklet.
Drag-and-drop the following link to your bookmarks bar or right-click it and add it to your browser favorites to keep it handy.
<a href="javascript:var%20d=document,w=window,e=w.getSelection,k=d.getSelection,x=d.selection,s=(e?e():(k)?k():(x?x.createRange().text:0)),f='http://%%site.server%%/%%site.path%%/index.php?action=newnotice',l=d.location,e=encodeURIComponent,g=f+'&status_textarea=%22'+((e(s))?e(s):document.title)+'%22 from '+l.href;function%20a(){if(!w.open(g,'t','toolbar=0,resizable=0,scrollbars=1,status=1,width=800,height=570')){l.href=g;}}a();void(0);">Post to %%site.name%%</a>