It's the small things that give you the warm fuzzy feelings, and make you think that maybe, just maybe, this might actually get some where.
We've just received a very short note from our prospective agent. She's just completed reading the full manuscript and said:
"I loved it."
(There were a few more words, but that's fundamentally it - and that is a direct quote.)
That guarantees nothing, of course, but it's good to think that if she enjoyed it, there's a fair chance that she'll know exactly which editors are likely to feel the same, which naturally increases the chances of getting it published.