The spam issue you’re encountering may well be unrelated – I get more spam than that each week, and I doubt you have lower visitor stats than me! I’d take a look at the code wp-blackcheck (a WordPress plug-in) uses, you might find it can be implemented here to stop most common forms of spamming before they start using your resources too much.

Re the “clarification” recently given for only NEW .kz domain names requiring hosting within Kazakhstan, a friend who runs a few sites had it confirmed to him that as his sites were all pre-existing, he no longer needed to change his hosting set up.

If you want any extra info / technical advice, feel free to contact me on the e-mail address supplied. Staying anon for a public facing site such as this though.