To say the truth, even at the risk of seeming too much self confident:
I don't use any filler, I try to stay far from those words, and still I can
have good conversations and sometimes good laughs.
A filler that used to be very popular: /cioe`/
A filler which is now very popular: /come dire/
Another one: /se volete/ and his bigger brother: /se vogliamo/.
Please stay away from /come dire/ and from /se volete/, /se vogliamo/.
Reason:
/come dire/ is used when somebody pretends to appear imaginative or
to think deeply, actually the truth is that the old-fashioned and humble /cioe`/
would have been more appropriate,as it clearly states: wait a minute, I have to think.
/se vogliamo/, /se volete/, etc. are even bigger lies:
the speaker is asserting asomething, for instance a political opinion, and
uses this filler, which actually does not weaken his opinion, but weakens
the RESPONSABILITY he or she is assuming by the simple act of expressing the opinion; I would not trust anybody who regularly uses this filler.
An interesting note: our politicians (not really all of them) make big use of both the fillers I pointed out.