It is my understanding that Google pretty much ignores the meta tags, except to occasionally display the meta description tag as part of a listing's description.
IMHO, Google totally ignores the META keywords, but not so sure about META description. It still counts, however little that may be.
Do you have any proof that this helps in Google?
A definitive proof of anything is difficult to establish, but going by some of own experience and of others, there seems to be some benefit. Afterall a website, as a part of www is suppose to be a combintion of inbound and outbound links, not one that ends in a dead end.