This can be called washing.
Sure you can do that and if the tax man ever calls then they may be upset about it, but you would have to weigh that up yourself.
What are the chances you will get caught, are they going to worry about a small investor changing their mind ?
If you sell today and then decide that the company has a better future than you thought, you are entitled to buy them back on Monday aren't you?
Maybe you read an article on the net that sounded good so you bought them again for 2008
Also read this
http://www.aussiestockforums.com/for...ead.php?t=7381