I have always paid close attention to my meta description for any page/post. I look at it as the window to the store. If I don't like what I see, well I won't go in - no matter how flashy the shop sigh is!
It is a constant annoyance that no matter what plugin/theme I use (I'm a WP person), and no matter how I push my carefully set meta descriptions, the SE's choose what they feel like, at random, from all over my page/post, including image alt tags.
One day - magic ...... Thanks to Ana Hoffman @ TGC - Trafficgenerationcafe
[go there- this is good stuff!!]
[not enough posts to offer link but getting there ]
This little trick lets you control your meta descriptions in the SEs:
1. Compose your page / post
2. Write your meta
3. Take your meta description and copy this so that it becomes your very first paragraph - like a page/post snippet.
4. The SE's will pick this up - at least they do for me
Now it's best - from a flow point of view - that you make the H1 title flow into your meta to make it one paragraph like but this is not always easy/possible (at least not for me) so 1-4 above is fine, and it does not look crappy to the reader!