Anyway of all the different maxims for politeness, I tend to use the sympathy maxim most often. This was highlighted to me when one of my friends once asked why do I always use the word 'sorry'. Whether I accidently spilled coffee on someone or that person accidently spilled coffee onto himself, I seem to be apologising all the time. Upon some reflection, I realise i am not really that sorry. Somehow it has been instilled in me that if I apologise, whatever drama I am presented with will be over and I can prevent a confrontation or being in an awkward situation.
I remember this started when I asked an acquaintance about her dad's occupation and her reply to me was a blatant, 'My dad is dead'. It was really awkward because she didn't show any emotion or try to carry on the conversation by assuring me its alright. She was simply still. At that point in time I could only think of saying that I'm sorry to hear that. Perhaps this incident gave me the idea that the word 'sorry' is very useful. Simply by apologising, emotions can be soothed so that other things can proceed.
Despite having the almighty sympathy maxim, there are other maxims which can prove useful in different situations, without one sounding too apologetic for nothing. For example, the tact maxim is best when a request needs to be made. Instead of saying, "I am sorry to disturb, but can you please help me with this Maths question?" One can choose to say, "Could you help me with this trivial Maths question with your intelligence?" This sentence, in fact encompasses three different strategies.
Of course the first strategy would be the tact maxim, which minimises the extent of the problem, which in reality could be a real hassle. Secondly, it maximise dispraise to the user by implying that he's incapable of solving even a trivial sum, thereby deploying the modesty maxim. Thirdly, the approbation maxim is also used in maximising praise for the other party, when the word 'intelligence' is intentionally used. However, while using these maxims, one must be sure not to over use them. Otherwise they may end up sounding more like sarcasm.
All these are simply techniques used to be 'polite' or put it in another way 'deceitful' or 'bootlicking'. Thus, one has to be careful in deciphering these nice words or be clever enough to use them to one's advantage. This gives us room for interpretation of ambiguous words like 'unique' and 'special', so that we do not get personal too easily or likewise over the moon about such superficial comments. They may just be another maxim, again.