I have this problem too. Recently the 503 page started to show up.
Freeones.com works fine for some time but then pages just won't load. After 2-3 minutes everything is back to normal.
I noticed that when i use direct connection (Russian IP) the problem persists. But when I use anonymizer (i.e. proxy) site works fine.
It's just like the site is having two faces - for Russian IPs and the rest of the world. I should add that the site is always freeones.com (not freeones.ru)