More information is great, the first few times you need it. But once you have learned what the command does, the advanced tooltips simply get in the way. A common occurrence is to work on something, leave your mouse at one spot for a few seconds only to have the information you are trying to read and use covered up by the tooltips. This is very annoying. How do you deal with this?
There are a few options. This is AutoCAD, where everything can be customized (mostly anything.) If you open your configuration dialog (type in OP at the command line) and go to the DISPLAY tab, there is a button you can push to turn tooltips off. That’s great, no more interference. However, there are no more tooltips either.
If you want the tooltips, but not the Advanced, or Extended, tooltips, there is a button to turn only those off. This may be the compromise you want. You get the tooltips, but not the giant window of tooltips covering your work area.
A third option and one I suggest you try, is to set the time AutoCAD 2009 waits to show the extended tooltips to a high number. Its default setting is 20 seconds. Set it 45 or 60. Try it out until you find a number you can live with. Tweaking this setting will allow you more time to keep your mouse still but still call up the extra data if you want it. You might find that this will allow you to get that extra little help you need every once in a while, but yet keep your screen open and friendly.
I hope this helps.