Is anyone using a hosting provider - which provider, and what technology stack?
Or are people running things at home? If so, do you have protection against loss of connection?
I'm currently C# .NET on XP home PC on a wired 4Mbit cable broadband, which seems pretty reliable (and I had the OS and software for other work anyway).
The only reason I would go hosted is for protection against loss of broadband connection. I once imagined a simple backup bot on a separate site / connection (and possibly with a scraping option for API failure) that ran a heartbeat to the main bot, and if it couldn't detect it, ran through each market with bets it in, checked if the P&L was flat across selections, and if not placed a bet to flatten - but haven't got round to doing anything about it yet!
I can only get about 1Mbit ADSL where I live as too far from exchange, but that might be fine for the backup bot, and probably cheaper to run a spare PC on a separate connection at home than go hosted (or maybe even run the backup process at a mate's hose in case of power cut locally!)
(I did think there might be an advantage in being hosted close to betfair servers, but that's not a big issue for the strategies I'm working on at the mo.)