Pros: meaningful work, responsive staff, ability to work anywhere/anytime, decent pay/bonuses.
Cons: can't contact other tutors, no benefits, part-time.
As a tutor, you can sign into tutor.com's application and mark yourself as "available." When you get a student (usually pretty quickly, depends on the day/time), both of you will work together in the tutor.com classroom to finish whatever they asked you about. It's not an answer service - your job is to guide the student, not recite solutions. The classroom – more... allows live chat, drawing on a virtual whiteboard, uploading/sharing files, and (optionally) voice.
Tutors can work up to 30hrs/week (part time). You can either schedule hours, or log in as a floating (backup) tutor. Tutor.com is open 24/7, so you can literally tutor at 3:00 am in your PJ's if you want.
As a probationary tutor (new hire), the pay rate is $9/hr, but you will be promoted quickly to higher pay rates with good student ratings and good reviews by your mentor. Pay for senior math/science tutors can be as much as $15/hr (including pay bonuses). Tutor.com hires all of its mid-level managers (mentors) from among their tutors, so there's opportunity for advancement.
Tutor.com is a student-driven service, and they take student ratings seriously. Tutors who have high ratings are eligible for pay bonuses. You mentor may contact you with feedback about sessions which left students unhappy. 90% of the time, a bad rating is because you could have handled something better, perhaps by further clarifying the question or trying a different approach if the student was getting frustrated. Tutor.com is a real business that expects quality tutoring from its tutors.
The students are generally nice and interested to learn. I've yet to encounter an abusive student out of 1500+ sessions. Most of them are pretty easy to work with, though occasionally you'll encounter a student who is really clueless or expects you to do the work for them.
It is possible to conduct two sessions simultaneously, though I seldom do this, and tutor.com doesn't care as long as your average session length is ~25 minutes. They understand that some of the upper level math/science topics simply can't be finished within 20 minutes flat. If someone asks you a second question and you've already been with them for half an hour, you can simply ask them to reconnect with another tutor.
The job isn't perfect though. Writing on the whiteboard using a mouse/touchpad can be a pain, and not all of the students are easy to work with. Sometimes students will give you a bad rating that you truly don't deserve, and it will lower your pay bonus. Other times students will expect tutors to help them with out-of-scope questions (e.g. asking an accounting or economics question as "Statistics") and downgrade you because you can't help.
But, if you enjoy working with students, it's a great way to earn extra income. It really makes your day when someone tells you "I get it! You're the best tutor I've had." – less