They record additional stats about the hosts and always try to connect to those first, which are listed as best hosts.

Examples you might want to use:
-Uptime
-Number of answers received for a query on average (for the last 10 connections or so, because this can change)
-time connected (for the last 10 connections or so)
-number of successful connections
-number of connected hosts
-connection latency (how long it takes to react)
-the region it is from (limewire now can prefer hosts from your own country)


Other things:
-announce what you are sharing. If you are sharing nothing you might have a hard time to connect, see the "allow freeloaders" option (though this code changes quite often).

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