Hello!
Why Swarming?
Well the advantage of swarming is not present for modem users. However if you are on a broadband connection and have found a popular file that is available from multiple hosts then you will get the file downloaded at higher speeds and maybe even reduce the amount of traffic on individual hosts. My record so far was when downloading a mp3 file from 8 hosts at the same time and reached the download speed of 770Kbit/s( I am on a 8Mbit/s connection) and yeat the first initial host that I clicked to download it from only allowed a downloadspeed of 5Kbit/s so there is a huge advantage. Whenever I have started downloading a file and I see that it is kind of slow I always try to find alternate locations for the same file by performing a new search for the file in question and if LW finds another source it will attempt to connect to that host or those hosts too and several times I will get much higher speeds if LW finds an alteranate source to also download it from for instance it can be upped from 5Kbit/s to in average 200-300Kbit/s when downloading from 2-3 hosts a clear difference in speed dont you think?.
Now to this sensitive question about whty you do not see any LW UltraPeers in your connections?
Shareaza is considered a hostile client and the developers of Gnutella clients especially between Bearshare developers and Mike the developer of Shareaza. This has lead to some clients blocking Shareaza and I think that LW does it to in the most recent versions. Why is Shareaza considered hostile?. You can read all about it here but be warned there is alot of reading to do so make sure you have the time to do it. Here is the spot to check out:
http://www.mp3newswire.net/stories/2002/Shareaza.html