There are several Bookmarklets around these days to make the life easier while you are browsing the net. Besides, bookmarklets are:
A bookmarklet is a small JavaScript program that can be stored as a URL within a bookmark in most popular web browsers, or within hyperlinks on a web page. Because Internet Explorer uses the term favorites instead of bookmarks, bookmarklets are also less commonly called favlets or favelets.
One of the main disadvatanges in this case was for me in spite of everything that Konqueror didn’t support them – I was not able to drag and drop bookmarklets for example from del.icio.us to my bookmarks panel which was very disappointing.
But then I came across this german post which gave me a nice solution to this problem: the reason why Konqueror is not able to handle Bookmarklets is that Konqueror treats them as different objects – they are small service programs, and therefore must be stored in the right place.
But if you once know that the rest is easy: make sure that you have installed the kdeaddons (that should be the case with every KDE standard installation) and go to the tools menu. There you will find a section called “Minitools” which you can edit. Add there any javascript bookmarks you want, the interface is quite similar to the normal bookmarks interface.
And: it works quite well so have fun with Bookmarlets in your konqueror! 🙂
The only thing which is still missing though is an easy way to integrate these minitools also with the normal toolbars, but that will hopefully find it’s way into KDE 4 – and because of the high, high expectations everyone and especially me has we should call that release “the glorious” 😉
/home/liquidat 
Do you know if the “javascript:” part of the URI is required for the Minitools? If it is, then the Minitools don’t work when JavaScript is disabled for the site you are currently viewing. Alas, this problem exists in the same way in Firefox, so I don’t know if anyone will ever fix it.
Well, the definition of a bookmarklet is that it begins with javascript – therefore the miniprograms which are bookmarklets are using javascript and start with javascript.
Have you filled a wish report on kde-bugzilla if they can exclude miniprograms from javascript-deactivation? It would be interesting to see what they think about.
liquidat
You can add minitools to the ‘Extra’ toolbar — you then get a drop down menu, and two click access to any bookmarklet.
Thanks for that comment, I had completly forgotten about the possiblity of adding a toolbar.