Yeah, if my site uses canvas, I should probably have a fallback for IE8. But in practice, and I know I'm not alone here: Unless I see that IE8 makes up a significant part of my site's traffic, fuck it.
There are already enough vendor issues between the latest versions of the big 4 (Chrome/FF/Safari/IE), spending more time going through old versions of those 4 will drive you bonkers.
It's rarely worth it and spending any amount of time catering to those users is almost assuredly not a good use of your time.
If you have a static IP, I strongly recommend researching whether the router you are using has any known security problems. Lately unsecured routers have been abused as a (poor) black hat's proxy a lot.
Source: I run a filesharing service and lately we have seen a lot of abuse from IPs who after an nmap reveal themselves as routers with known security problems like publicly known (default) service control panel passwords.
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On Dolphin Mobile 11.4.3.Actually, now that I thought about it a bit, it's a perfect metaphor for the current bitcoin environment.