Serge,
Read down a little farther on the tinyurl.com page and you will find this:
For users of up to date IE browsers, the clicking and dragging of links that contain javascript is no longer supported. To add this to your IE links toolbar, click the link with your right mouse button and select "Add to Favorites..." from the menu. Click OK if a security warning alert pops-up (this shows up since the link contains javscript). If a list of folders is not shown, click the "Create in >>>" button (see image at right). Now select the folder called "Links" and then click OK. You should now see the TinyURL on your links toolbar, if not, see the last paragraph above.
You will need to close IE and reopen it and the tinyurl icon will be on the Links tool bar. When you are at a web address you want to turn into a tiny url, click on the icon on the tool bar and the tiny url will be copied to your clipboard and ready to be pasted into a post. Email me if you have more trouble getting it to work.
Do a good turn daily!
Don