Anyone experienced problems with cloudflare
 

I have been using cloudflare.com for few months now and there is the problem with statistics the uniqs dropped down from 60k to only 300-400uniqs and the visits are still the same 80-100k anyone having similar problem?

No issues like that on our end. We currently have about 15 sites running through cloudflare, and while we've noticed what initially appears to be a drop in traffic*, it's nowhere near as severe as what you're describing.

*Not really a drop in reality.. it's just that bad/blocked traffic isn't recorded in the overall and does account for the drop we've seen.

What I would suggest doing, if you haven't already, is enable analytics in your cloudflare settings as well as add the analitics code to your site(s) and compare analytics & cloudflare results after say, a week. If you notice an issue beyond there then maybe open a ticket with them and see what's what.

what are the advantages of using cloudflare

Hide your real IP ?

It's far more than that...

You can find the full list of benefits here, if you're so inclined to: https://www.cloudflare.com/overview.html

Sorry if this looks like a dumb question, but where do you read those statistics ?
Cloudfare will "cache" like a CDN your site (and static assets), so if your statistics are from a server side counter like awstats, this is perfectly normal and show how cloudfare relieves your server
Hopefully this make sense to you ?

yea it was awstats, and now i have putted piwik and it's working great, but the interesting part is that awstats is actually counting visits accurately. have you experienced any problems with tracking sales or something else, i have seen drop in sales (directly to tour) as well (the traffic is steady and actually growing a bit, even clicks to sponsors). ?