I actually have very good sucess with this as long as you understand its limits. A few points about push:

First, if you're *also* behind a firewall (or are attempting to spoof it by placing a fake IP in the "force IP" box) it will *never* work. Two firewalled hosts can't connect to each other.

Second, only try ones marked as "Available" since push routes expire quickly and can't be retried like a normal connection (you can - it just won't help).

Third, don't waste time - every second you wait to download a push item the chances of sucess are less. If you wait for a large result list to fill up before downloading the push routes will all be dead already.

What's a push route? Well, for a push to work the a message must be sent back through the exact *same* chain of Gnutella peers that originally sent you the search result. Connections come and go quickly and once this chain breaks the push will not work. Also peers will only remember the most recent push routes. Wait too long and the info on how to find the original server is gone from some links in the chain.