Online always if I am playing cash games and have that option and I have notes and color codes in the lobby .. live not so much, except on like a Saturday night there will only be 2 tables even running and they won't be full so ... a lot of the time it is all the same players and you know everyone, or almost, an exception is if one has an unbalanced number of players splashin round and then of course ....
Naturally, the choice of online poker tables is very important, this directly affects the profit at the end of my session.
When you play live, it is usually easier to play there, because I know many players. In an unfamiliar place, I carefully play the first few hours and study the players.
I agree a lot with Zveda kz. Choosing the right online table is extremely important. I try and sit in and watch a few rounds if possible. I also do this live (starting at lower limits) while keeping an eye on the table where I wish to go. This is especially true if my name is on the board for the switch to the higher limits. Understanding your opponents is half the battle (in my opinion) and being able to see the regulars from the non live is extremely proactive.
If I go to play in a tournament where tickets are awarded, I don’t sit down to draw just one ticket. The probability of taking first place and taking this single ticket is very small. I also try to sit down where there are few players, but there are a lot of tickets.
In cash games yes. And I also try to seat select. Ideally I want to have fish and LAGs on my right and nits on my left, because it allow me to play most pots in position. On smaller sites, which is basically everything other than pokerstars, you do however sometimes need to take, what is available, if you even want to play. At least when you get above 2-5NL. But in that case I will sometimes just not play cash games, if I can not get on a good table.
In the micros the rake is typically around 10BB/100 for 6-max and a bit less for full ring. And the reality is, you are just not going to beat that, if you only play against solid regulars. Every sensible player know that, which is also why, regular cash tables tend to break down, if the fish leave. Especially at 6-max, where there is rarely more than one fish per table.