To Update or Not to Update

I have been thinking about this for quite some time now. Is it better to update and regularly improve apon your existing article(s) or to let them go? I am really cusious as to if reularly updating them make a signifigant diffirence or even a diffirence at all. 

Also is it better to have a lot of short articles with unique content or to have a few very long ones that are filled with unique content?

If nobody has any solid information on this I may just have to test this myself. 

One thing's for sure...Google loves fresh, updated content - IF the updates add value to the site. Simple re-writes of a few words won't do. So, if you refresh your article with some additional info, and then promote it on FB, Twitter, Google Plus, etc., you will increase its SEO value.

The length of your article is not as important as its relevanz and usefulness. However, a 1000-words page with tons of detailed (and unique) info may be considered a better resource by Google than a 400-words article featuring only highlights of the topic.

Side by side, given the same degree of usefulness and optimization, longer is probably better than shorter.

I would say updates are only worthwhile if you have new information.  As to length, between 400 to 700 words is a good length.  If it is too long people will never get to the end.  Better to link related pages together.

Thanks for the quick reply Chefkeem and Lakeerieartists. I will have to keep this in mind when I am doing my writing.