Its about half the price of other ISPs
That's like the only benefit lol...
How do you figure that? A quick look on any price comparison website, and Tiscali frankly looks expensive these days. Have a quick look on a price comparison website like GoCompare;
http://www.broadbandchoices.co.uk/calculator.asp
Pop in your postcode and check out some of the alternative packages by price.
I know for certain that Tiscali is no longer the cheapest package available, but
is the least reliable - they've been able to keep their prices up while other providers offer cheaper services because they'd already built a reputation of "cheapest broadband" - and that reputation seems to be sticking without any facts backing it up any more!
Also if you've got Virgin in your area, and currently have Sky Satelite TV, I'd even look in to doing what I did - switching all services (Telephone, broadband & TV) to Virgin media - I think I'm saving around £50-£60 a month this way from my old total monthly outgoings... or look in to any other "bundle" packages available in your area. If money is your chief concern, that is.
Either way though - I'd seriously suggest finding an alternative to Tiscali, whatever you decide to do.