A Flooder is any software application that tries to overload a connection by any intrusive mechanism, such as fast pinging, causing a Denial of Service attacks, Ping of Death attacks, ICMP attacks, http overload attacks, etc.
Apropos.bho is a browser helper object, variant of the PeopleOnPage software. Apropos Ads may be displayed in a variety of formats including: -- Pop-Up or Pop-Under Windows which will appear as windows on top of or beneath other windows on the computer screen. -- Sliding Skyscraper Windows which will appear as sliding images displayed over POP! content.