Strange Site Traffic

Recently I noticed that my website gets strange hits from IP 217.23.***.*** (Example 217.23.132.228, 217.23.143.147, 217.23.133.99) and always from Cjsc Caravan-telecom, Moscow, Russian Federation (accordingly Statcounter). My site gets about one hit per hour (25-30 per day). Visit lenght 0 seconds. This lasts 3 months. All visits are without referring url.

My site on first place for my target keyword on "big G". This is my personal IM product.

Any thoughts are welcomed...

sounds like you dont have enough content for the visitors, your just getting hits no one is sticking around

A client of Caravan (a telecom provider in Russia) had either bookmarked your site in their home user page or subscribed to your RSS feed. If you check the user-agent string you will probably find it is an older browser (masking the actual user-agent) or a subscription tool. Also, bet these are HEAD requests and your site returns a '304' - hence the 0 seconds of visit time.