The problem with advertisements is well known for
gandul.info. The text is surrounded with a lot of advertisements and some of them are pop out over the content. This is really annoying for a regular user because he/she has to close a lot of pop-up windows even though he/she didn't open one of them before.
In the sample below, you can see that a pop-up has been opened on mouse over and the close button is on the top line of it (left side). As you guess, when you close the advertisement, on mouse over the window opens again. So you must be careful to not reach again the banner surface with the mouse cursor.
