I think at the micros the main thing is to constantly evaluate each table and ask your self a series of questions. The following is a sample of the questions I ask myself after I have been seated at a table for 25 or so hands:

  1. Are there fish at this table? (remember if you can't identify the fish at the table it is very possible you are it!)
  2. Do I have an advantage over others at this table?
  3. Can I exploit others at this table?
  4. What is my image at this table?
  5. Am I comfortable at this table with this stack size? (this if I am getting deep)

I'm sure there are others that would/could be pertinent so ask them. If you are getting enough yes answers move on. I usually just open a new table or sit down w/1 or 2 others and evaluate the table as it fills up. I won't open another table until the others are full then I repeat.