I did exactly what you are describing. I stayed in Thailand for 60 days introducing myself to a few ladies, then visited a few countries for 14 days with my instant love girlfriend, then came back to Thailand. They looked through all my stamps to see where I went and stamped me back in for 60 more
You can't live in Thailand all year and not pay them a boat load of cash. You can split your time between Thailand, Malaysia, Korea, and Philippines and not have to cough up too much cash and have a warm and sweet girlfriend in each one to take care of your laundry, cooking, and entertainment
Typically you can visit Thailand for 180 days a year, before needing a long term visa. so coming every other month works fine until you bump the 180 days in the last month.
No difference, they are looking at total number of days you stayed in Thailand during the year and how many times you left for a day and came right back.
no difference. If you'ee there over 180 days total in a year, or have done back to back visa exemptions or tourist visas more than 2x without visiting somewhere else then you are trying to live there without the proper visa. You will be questioned