That's the main reason, there have been times were I have not been able to see which cog or what gag others are using/going for because of the big chat bubbles...
Not to say I still don't like it. There are times it's very helpful especially if you have a sf who is new to the whole thing, that is usually when there is a lot of chatter.
I try to limit sf chat to small bubbles if I use it at all during a vp or Cfo run. Now i've been known to chat up a storm in factories, buildings, and mints, but i try to be respectful of others around me and not just sf chat all the time.
If you are on the same side you can use the whisper like bubbles, so your toon doesn't make any noise while talking and only the people who are near you can see it, that means the other side doesn't see the whisper bubble. All you have to do is put a . (period) before you chat.. However, remember that those bubbles don't go away until you say something else
There has only been one time that I can remember sfc goofing me up, it annoyed me, but whatcha gonna do...
I wish they has a speed chat phrase that says I can't see or something like that, so people understand what your talking about....