Tygo has been working on their search engine for the past couple years.
They released it and their clunky PPC program way before they were ready, it was terrible, nothing worked.
But over the past couple years, they have been making steady improvements.. and many changes to their PPC model.

Now they have a flat rate cost for "PPC" or would you call it Pay for placement? Basically its $1 to $5 per month for the 5th through 1st position.
No addtional charges for clicks. These ads run strictly down the right side of the window, similar to Googles positioning.

They also have presidential position, $25/month for the very top of page and 2 premiere positions at$10/month, which are just below the presidential position.

I registered and set up an ad within minutes, the ad was displayed instantly.
So the system and model looks pretty solid to me. The only claim they have to prove now is that they really can generate traffic.

Has anyone used Tygo? What do you think of it?

I bought a few links in their directory just to get links, but most likely it has limited longterm value as the directory does not seem to care too much about relevancy of category placement or link title.

as far as the search relevancy it appears that it could use a good bit of work as well. for example, why am I given like 9 yahoo groups pages above yahoo.com when I search for yahoo? http://www.tygo.com/Search/?s=yahoo