Having a mentor, albeit an online one, is without doubt a good idea if you want to more successful in any venture. BUT you must choose the right mentor; one who in his own right is very successful in YOUR chosen field. The mentor must be the person himself. NOT just any mentor from the agency or company of that successful person; which unfortunately is the case in most online mentoring services. You'll inevitably have all kinds of problems when this "employed' mentor leaves the agency or company and you'll be assigned another mentor.
This is the experience a number of newbies, that I have mentored, shared with me.So if anyone is looking for and paying for an online mentor, I suppose he/she should "contract" with the actual person you choose to be your mentor.
The Online Biz Guy
Http://online-biz-guide.com