I want to change adwords because is many expensive for me i thinked to use ask.com is good? some ideas? other best ppc programs?
some good experience?

You can try facebook ads and myspace ads (myads)

Those are pretty good. What are you trying to promote?

I tried AdBrite and their targeting is a joke. Unless your product is very generic, even geographically, you might want to avoid them.
FB and MS are good options.... I think Microsoft has something similar - a friend of mine saw his ads on msn.com, believe it or not.

I'm like to promote software products and clickbank digital products
are goo facebook ads and myspace ads? wich kind of traffic i can get from social network? and how much cost buy keywords?
and ask.com what do you think about?

Other Question,
MySpace and Facebook ads accepted italian advertiser to promote products in usa?